Interstate 4

File:Westbound Interstate 4 in Tampa approaching Malfunction Junction 3.jpg

I-4 maintains a diagonal, northeast–southwest route for much of its length, although it is signed east–west. It roughly follows the original path of the South Florida Railroad built by Henry B. Plant in 1884.

The highway starts its eastward journey at an interchange with I-275—known as "Malfunction Junction"—near Downtown Tampa and is the starting point for milemarkers and exit numbers (which are mileage-based). Just east of Malfunction Junction, I-4 passes along the north side of Tampa's Ybor City district, where a mile-long ({{Convert|1|mi|km|disp=output only}}) connector links to the Lee Roy Selmon Expressway (SR 618) and Port Tampa Bay. I-4 continues east past the Florida State Fairgrounds toward a turbine interchange (uncommon in the US){{cite web |last1 = Boniface |first1 = Russell |title = Interchange |url = http://www.asce.org/cemagazine/Article.aspx?id=25769803777#.U_KcMmNrUhw |work = CE Magazine |publisher = American Society of Civil Engineers |access-date = August 19, 2014 |date = November 1, 2001 |quote = The turbine design, which is rare in the United States, is a first of its kind in North Carolina; another notable example exists at the interchange of I-4 and I-75 in Tampa, Florida. |url-status = dead |archive-url = https://web.archive.org/web/20140819090758/http://www.asce.org/cemagazine/Article.aspx?id=25769803777 |archive-date = August 19, 2014 }} with I-75.

File:Emergency Shoulder Use Eastbound Interstate 4 Before Hurricane Irma.webm on the Gulf Coast with emergency shoulder use to improve traffic capacity]]

After passing near the eastern suburbs of Hillsborough County—including Brandon and Plant City—it enters Polk County, where I-4 crosses along the north side of Lakeland. The Polk Parkway (SR 570) forms a semi-loop through Lakeland's southern suburbs and returns to I-4 at the Florida Polytechnic University campus, near Polk City; it does not serve as a bypass route for I-4 traffic. Just after the western junction with the Polk Parkway, I-4 turns from an eastward to a northeastward heading. Between SR 33 (at exit 38) and US 27, I-4 passes through the fog-prone Green Swamp, although the landscape beside the highway is mostly forest as opposed to water-logged swampland. Ten variable-message signs and dozens of cameras and vehicle detection systems monitor this stretch of mostly-rural highway as a result of several large, deadly pileups caused by dense fog.{{cite news |last1 = Maready |first1 = Jim |title = One Year After Tragic I-4 Pileup, Questions Remain |url = http://www.theledger.com/article/20090108/news/901080410 |access-date = August 19, 2014 |work = Lakeland Ledger |date = January 9, 2009 |page = 2 |quote = The Florida Department of Transportation is in the process of installing 10 electronic signs...The system will also include a series of 22 cameras, which can be rotated, and 77 vehicle-detection systems, which will observe the amount of traffic and speed of the vehicles. |archive-date = August 19, 2014 |archive-url = https://web.archive.org/web/20140819093715/http://www.theledger.com/article/20090108/news/901080410 |url-status = dead }}{{cite news |last1 = Chambliss |first1 = John |title = Fog Has Caused Deaths Before |url = http://www.ocala.com/article/20080114/NEWS/801140324?tc=ar |access-date = August 19, 2014 |work = Ocala Star Banner |date = January 14, 2008 }}

File:I-4 WB 1 mi to FL 535.jpg

At mile 57, I-4 enters Osceola County and, soon thereafter, intersects Greater Orlando's beltways: the Western Expressway (SR 429) on the western side and the Central Florida GreeneWay (SR 417) which rounds the eastern side before returning to I-4 in Sanford. Additionally, an exit to World Drive (signed as just "Disney World") runs north as a limited-access highway into Walt Disney World and an electric pylon in the shape of Mickey Mouse can be seen on the southwest corner of the intersection. The single Central Florida GreeneWay/World Drive exit (exit 62) also marks an abrupt change from rural to suburban/urban landscape. The highway passes beside Celebration and Kissimmee on the east side and Walt Disney World (not visible) on the west side.

File:I-4 East - Orlando Downtown City Skyline (43720081585).jpg

For the next {{convert|40|mi|km}}, I-4 passes through Greater Orlando, where the highway forms the main north–south artery. It enters Orange County, passes through Walt Disney World and by SeaWorld Orlando and Universal Orlando, and intersects all of the area's major toll roads, including the Beachline Expressway (SR 528), Florida's Turnpike, and the East–West Expressway (SR 408). Orlando's main tourist strip—International Drive—runs parallel and no more than {{Convert|1.5|mi|km}} from I-4 between Kissimmee and Florida's Turnpike. Between Michigan Street and Kaley Avenue (about mile 81), I-4 turns due north (while still being signed east–west), heading past Downtown Orlando and its northern suburbs. A {{convert|21|mi|km|adj=on}} section of I-4 from west of SR 435 to east of SR 434 (miles 75–96) underwent a $2.3-billion reconstruction, and was completed on February 26, 2022. This project replaced most bridges, changed the configurations of many intersections, and added two express toll lanes—named I-4 Express—in each direction.{{cite web |title=FAQs |url=http://www.moving-4-ward.com/about-the-project/faqs/ |url-status=dead |archive-url=https://web.archive.org/web/20140326101000/http://www.moving-4-ward.com/about-the-project/faqs/ |archive-date=March 26, 2014 |access-date=August 19, 2014 |website=I-4 Ultimate |publisher=Florida Department of Transportation}}{{cite web |title=I-4 Express PD&E Study |url=http://www.i4express.com/ |access-date=August 19, 2014 |website=i4express.com |publisher=Florida Department of Transportation}}

After passing along the west side of Downtown Orlando, I-4 continues through the city's northern suburbs—including Winter Park, Maitland, Altamonte Springs, and Sanford. Around mile 91, I-4 enters Seminole County and, soon thereafter, shifts to a northeast heading. The Seminole Expressway (SR 417), after passing around the east side of Greater Orlando, has its northern terminus (exit 101B) at I-4 in Sanford. This intersection will also connect with the Wekiva Parkway (SR 429),{{cite web |title = Wekiva Parkway (SR 429) Schedule |url = https://www.wekivaparkway.com/wpcms/data/img/uploads/files/Wekiva-Parkway-Schedule-1-2022.pdf |website = Wekiva Parkway |publisher = FDOT/CFX |access-date = September 17, 2022 }} at which point a full beltway (SR 429/SR 417; concurrent with I-4 for {{Convert|2|mi|km|disp=sqbr|spell=in}}) around Greater Orlando will be available. On October 21, 2022, the first part of this connection opened to traffic, with the westbound I-4 to southbound SR 429 ramp opening to traffic, along with the section of the southbound lanes between the ramp and SR 46.{{cite news |last1=Lehman |first1=Mark |title=Connection from I-4 to Wekiva Parkway opens |url=https://www.clickorlando.com/traffic/2022/10/20/state-readies-to-open-1st-connection-from-i-4-to-the-wekiva-parkway/ |access-date=October 22, 2022 |work = ClickOrlando |publisher=WKMG-TV |date=October 21, 2022}}

File:Florida I4eb End, Exit 132A.jpg

North of Sanford, I-4 is carried by the St. Johns River Veterans Memorial Bridge over the St. Johns River at the mouth of Lake Monroe. Along the bridge, I-4 enters Volusia County and passes Deltona and DeLand. The segment north of SR 44 has been widened from four to six lanes. Completed in winter 2016–2017,{{cite web |title = 408464-1 I-4 Widening from SR 44 to East of I-95 |url = http://www.cflroads.com/project/408464-1/I-4_widening_from_SR_44_to_East_of_I-95 |website = Central Florida Roads |publisher = Florida Department of Transportation |access-date = August 19, 2014 |archive-date = August 19, 2014 |archive-url = https://web.archive.org/web/20140819085201/http://www.cflroads.com/project/408464-1/I-4_widening_from_SR_44_to_East_of_I-95 |url-status = dead }} the entire length of I-4 has at least six lanes (three or more per direction). I-4 terminates at a junction with I-95 in Daytona Beach. SR 400 continues east into Daytona Beach {{Convert|4|mi|km|spell=in}} to US 1.

I-4 has two pairs of rest areas, one near Polk City and the other near Longwood. At each location, there are separate facilities on opposite sides of the freeway that provide services to traffic in both directions. The rest areas all provide disabled facilities with restrooms, picnic tables, drinking water, pet exercise areas, outside night lights, telephones, vending machines, and nighttime security.{{cite web |author = Staff |url = http://www.dot.state.fl.us/statemaintenanceoffice/Rest_Area_Listing.shtm |title = Florida's Rest Area, Service Plaza, Truck Comfort Station (WIM), and Welcome Center Locations |publisher = Florida Department of Transportation |access-date = February 3, 2013 |year = 2013 |url-status = dead |archive-url = https://web.archive.org/web/20130206121010/http://www.dot.state.fl.us/statemaintenanceoffice/Rest_Area_Listing.shtm |archive-date = February 6, 2013 |df = mdy-all }}{{google maps |url=https://maps.google.com/?ll=28.160514,-81.783793&spn=0.014472,0.027874&t=m&z=16 |title= Map of Polk County Rest Area vicinity |access-date= February 3, 2013}}{{google maps |url= https://maps.google.com/?ll=28.723109,-81.363029&spn=0.057581,0.111494&t=m&z=14 |title= Map of Seminole County Rest Area vicinity|access-date=February 3, 2013 |link= no}}

FDOT closed a pair of rest areas at the Daryl Carter Parkway overpass (mile 70) near Lake Buena Vista in early 1999 and replaced them with retention ponds to serve runoff from an additional lane in each direction of I-4.{{cite news |first = Jim |last = Stratton |work = Orlando Sentinel |url = https://www.orlandosentinel.com/2001/09/10/nowhere-to-rest-but-more-room-to-drive/ |title = Nowhere To Rest, But More Room To Drive |date = September 10, 2001 |access-date = March 9, 2014 |archive-date = March 9, 2014 |archive-url = https://web.archive.org/web/20140309084147/http://articles.orlandosentinel.com/2001-09-10/news/0109100084_1_rest-areas-rest-stops-poles |url-status = live }} Another former rest area, without any bathrooms, existed on the eastbound side near mile 127 in Volusia County.[http://www.dot.state.fl.us/surveyingandmapping/Past_StateMap/Maps/FLStatemap1989-90.pdf Florida Official Transportation Map, 1989] {{webarchive |url=https://web.archive.org/web/20150402094732/http://www.dot.state.fl.us/surveyingandmapping/Past_StateMap/Maps/FLStatemap1989-90.pdf |date=April 2, 2015 }}

A pair of weigh stations including weigh in motion scales is present at mile 12 between Tampa and Plant City. They were opened in January 2009 to replace a pair just west of the SR 566 interchange at mile 19.{{cite work |first = Dave |last = Nicholson |work = Plant City Courier |url = http://tbo.com/plant-city/new-high-tech-weigh-stations-open-monday-on-i--109222 |title = New High-Tech Weigh Stations Open Monday On I-4 |date = January 2, 2009 |access-date = March 9, 2014 |archive-url = https://web.archive.org/web/20140309083526/http://tbo.com/plant-city/new-high-tech-weigh-stations-open-monday-on-i--109222 |archive-date = March 9, 2014 |url-status = dead }}

File:Tampa-St. Petersburg, Florida 1955 Yellow Book.jpg

I-4 was one of the first Interstate Highways to be constructed in Florida, with the first section opening between Plant City and Lakeland in 1959. By early 1960, the Howard Frankland Bridge was opened to traffic, as well as the segment from the Hillsborough Avenue/US 301 junction in Tampa to Plant City. The stretch from Lake Monroe to Lake Helen, including the original St. Johns River Veterans Memorial Bridge also opened during that period. The segment from Tampa to Orlando was complete by 1962.{{cite news |title = Highways to Your Vacationland |url = https://news.google.com/newspapers?id=GjtQAAAAIBAJ&dq=history%20florida%20state%20route%2010%20-wikipedia%20-trulia&pg=4304%2C467553 |department = All Florida and TV Week Magazine |work = The Evening Independent |location = Jacksonville |date = June 3, 1962 }} By the mid-1960s, several segments were already complete, including Malfunction Junction in Tampa and parts of I-4 through Orlando. The original western terminus was set at Central Avenue (County Road 150 [CR 150]) in St. Petersburg,{{cite news |work = The Evening Independent |location = Jacksonville |url = https://news.google.com/newspapers?id=-j9QAAAAIBAJ&pg=6458%2C2155683 |title = Time Now to Plan for Interstate 4 |date = July 14, 1965 |page = 10A |department = Editorials |access-date = March 13, 2014 }} though a non-Interstate extension would have continued south and west to Pasadena.{{citation needed|date=March 2014}} Proposed I-4 was later extended southwest to the present location of I-275 exit 20, with a planned temporary end at US 19 and 13th Avenue South,{{cite news |first = Ron |last = Yogman |work = The Evening Independent |location = Jacksonville |url = https://news.google.com/newspapers?id=HO4LAAAAIBAJ&pg=6278%2C4126724 |title = City Buzzes at Interstate Impact on 1,600 Parcels |date = November 22, 1967 |page = 2A |access-date = March 13, 2014 |postscript = ; }} Subsequent articles:

• {{cite news |work = The Evening Independent |location = Jacksonville |url = https://news.google.com/newspapers?id=He4LAAAAIBAJ&pg=1292%2C4336296 |title = Section 2 of Interstate-4 |date = November 23, 1967 |page = 3A |access-date = March 13, 2014 |postscript = ; }}
• {{cite news |work = The Evening Independent |location = Jacksonville |url = https://news.google.com/newspapers?id=Hu4LAAAAIBAJ&pg=6897%2C4635181 |title = Section 4 of Interstate 4 |date = November 24, 1967 |page = 6A |access-date = March 13, 2013 |postscript = ; }}
• {{cite news |work = The Evening Independent |location = Jacksonville |url = https://news.google.com/newspapers?id=H-4LAAAAIBAJ&pg=2621%2C4840370 |title = I-4 Closeup: Sections 6, 7 |date = November 25, 1967 |page = 4A |access-date = March 13, 2014 |postscript = ; }}
• {{cite news |work = The Evening Independent |location = Jacksonville |url = https://news.google.com/newspapers?id=3D9QAAAAIBAJ&pg=7049%2C5027233 |title = A Final, Closeup Look at Interstate 4 Route |date = November 27, 1967 |page = 4A |access-date = March 13, 2014 }} and a continuation to the Sunshine Skyway Bridge was also designated as part of I-4.{{cite news |work = St. Petersburg Times |url = https://news.google.com/newspapers?id=VopQAAAAIBAJ&pg=4682%2C5254974 |title = State Agents Lay Out I-4's Tour to the South |date = July 19, 1968 |page = 1B |access-date = March 13, 2014 }} Construction was stalled at 9th Street North (CR 803) for several years.

File:I-4 east exits 111A-B.jpg

The entire Interstate Highway was completed by the late 1960s; however, the western terminus was truncated to Malfunction Junction in 1971 when I-75 was extended over the Howard Frankland Bridge. Eventually, that stretch was again redesignated to become part of I-275.{{cite web |url = http://www.moderncities.com/article/2016-oct-changing-tampa-then-and-now/page/1 |title = Changing Tampa: Then and Now |publisher = Modern Cities |date = October 2, 2016 |access-date = May 29, 2017 |archive-date = March 3, 2017 |archive-url = https://web.archive.org/web/20170303102716/http://www.moderncities.com/article/2016-oct-changing-tampa-then-and-now/page/1 |url-status = dead }}

In maps and atlases dating to the 1950s, 1960s, and 1970s, the Tampa–St. Petersburg section of I-4/I-275 was marked as the Tampa Expressway. The Orlando segment was marked as the Orlando Expressway. Both names have since faded from maps.

Although many post-1970 interchanges along I-4 were constructed before the recent widening projects, they were designed with I-4 expansion in mind. In other words, there is enough room available to widen I-4 to up to 10 lanes without extensively modifying the interchanges. Some of these interchanges include the I-75 stack (constructed in the 1980s) and several interchanges serving the Walt Disney World Resort (constructed in the late 1980s and early 1990s).

In 2002, I-4, along with most of Florida's Interstates, switched over from a sequential exit numbering system to a mileage-based exit numbering system.{{cite web |author = Staff |url = http://www.dot.state.fl.us/TrafficOperations/Operations/exitnumb/i_4.shtm |title = Florida's Interstate Exit Numbers- I-4 |publisher = Florida Department of Transportation |access-date = November 18, 2010 |url-status = dead |archive-url = https://web.archive.org/web/20101113130335/http://www.dot.state.fl.us/trafficoperations/Operations/exitnumb/i_4.shtm |archive-date = November 13, 2010 |df = mdy-all }}

A section of I-4 between Daytona Beach and Orlando, called the "dead zone", is rumored to be haunted.{{cite news |url = http://www.local6.com/news/13273890/detail.html |title = Ghostly Images Seen, Photographed on 'Deadly' Stretch of I-4 |publisher = WKMG-TV |location = Orlando |url-status = dead |archive-url = https://web.archive.org/web/20080914053758/http://www.local6.com/news/13273890/detail.html |archive-date = September 14, 2008 }} In 2010, the East Central Florida Regional Planning Council (ECFRPC), using geographic information system technology, performed an analysis to determine if this identified zone had an increased fatality rate related to crashes. The analysis, which compared this section of I-4 to several other dangerous I-4 sections, found that, while the dead zone area did not have the highest accident or fatality rate, it did identify that the percentage of fatality to accident was significantly higher in this location. Multiple hurricanes, including three category 4 hurricanes (Donna, Charley, and Ian) have also passed over that area.{{cite news |last1 = Boedeker |first1 = Hal |title = I-4 Dead Zone: Scary legend grows |url = https://www.orlandosentinel.com/entertainment/tv-guy/os-i4-dead-zone-scary-legend-grows-20141023-post.html |access-date = September 28, 2022 |work = orlandosentinel.com }}

The median of I-4 between Tampa and Orlando was slated to be used for the Florida High-Speed Corridor line between those cities. As a result of a state constitutional amendment to build a high-speed rail system between its five largest cities passed by voters in 2000, construction projects on I-4 included a wide median to accommodate a high-speed rail line. The high-speed rail project was canceled in 2004 but revived again in 2009. In 2010, the federal government awarded Florida over $2 billion (equivalent to ${{Formatprice|{{inflation|US-GDP|2000000000|2010}}}} in {{Inflation/year|index=US-GDP}}{{Inflation/fn|index=US-GDP}})—nearly the entire projected construction cost—to build the line, with work on the project to begin in 2011 and be completed by 2014. However, Governor Rick Scott's rejection of the funding ended the project.{{cite news |url = https://www.reuters.com/article/florida-rail-idUSN1629082420110216 |work = Reuters |title = UPDATE 1-Florida governor rejects US high-speed rail funds |date = February 16, 2011 |access-date = July 8, 2017 |archive-date = September 24, 2015 |archive-url = https://web.archive.org/web/20150924151223/http://www.reuters.com/article/2011/02/16/florida-rail-idUSN1629082420110216 |url-status = live }}

On January 9, 2008, 70 vehicles were involved in a large pileup on I-4 near Polk City. The pileup was caused by an unexpected thick morning fog that was mixed with a scheduled—and approved—environmental burn by the Florida Fish and Wildlife Conservation Commission. The fog drifted across I-4, mixing with the smoke and reducing visibility to near-zero conditions. Four people were killed and 38 were injured. The section of I-4 did not reopen until the next day, January 10.{{cite news |url = http://www.wise4u.com/interstate-4-deadly-collisions-2008/ |title = Interstate 4 Deadly Collisions |date = January 10, 2008 |archive-url = https://web.archive.org/web/20141213231721/http://www.wise4u.com/interstate-4-deadly-collisions-2008/ |archive-date = December 13, 2014 |access-date = April 27, 2018 |url-status = usurped }}

File:I-4 WB 2 miles to I-75.jpg

The I-4/I-275 interchange (Malfunction Junction) was rebuilt from 2002 to 2007,{{cite web |author = Staff |url = http://www.mytbi.com/projects/projectinfo.asp?projectID=44&RoadID=2 |work = Tampa Bay Interstates |publisher = Florida Department of Transportation |title = Construction Projects: I-4/I-275 Interchange (operational improvements, completed December 2006) |access-date = November 27, 2011 |url-status = dead |archive-url = https://web.archive.org/web/20110927125926/http://www.mytbi.com/projects/projectinfo.asp?projectID=44&RoadID=2 |archive-date = September 27, 2011 |df = mdy-all }} and I-4 has been widened from four to six lanes (with eight lanes in certain segments).

Eastbound I-4 shifted to its new, permanent alignment between Malfunction Junction and 50th Street on August 8, 2006. The new alignment includes a right-lane ramp exit/entry at the 22nd Street/21st Street Interchange (the previous left-lane configuration was causing hazardous conditions to commuters since its opening in 2005). On August 11, 2006, a fourth lane opened on eastbound I-4 between the downtown junction and 50th Street (led in by a newly opened third lane on the eastbound I-4 ramp from northbound I-275). And, on August 18, the new westbound alignment, just west of 50th Street, opened. The newly opened lanes will improve flow throughout the interchange. The 50th Street overpass, however, would not be complete until late 2007.{{cite web |author = Staff |work = Tampa Bay Interstates |publisher = Florida Department of Transportation |date = August 8, 2006 |url = http://www.i4.org/content/users/details.asp?newsid=2051 |title = Eastbound I-4 in new alignment |url-status = dead |archive-url = https://web.archive.org/web/20070927181057/http://www.i4.org/content/users/details.asp?newsid=2051 |archive-date = September 27, 2007 }}{{cite news |location = St. Petersburg |publisher = WTSP-TV |url = http://www.wtsp.com/news/local/article.aspx?storyid=37001 |archive-url = https://archive.today/20130209165551/http://www.wtsp.com/news/local/article.aspx?storyid=37001 |url-status = dead |archive-date = February 9, 2013 |title = Eastbound I-4 Traffic: New Lanes, New Exit through Ybor City |date = August 7, 2006 }}{{cite news |location = St. Petersburg |publisher = WTSP-TV |url = http://www.tampabays10.com/news/local/article.aspx?storyid=37267&s=newsletter |title = New I-4 Lanes Help Drivers Get to Concert Early |date = August 10, 2006 }}{{dead link|date=June 2016|bot=medic}}{{cbignore|bot=medic}}{{cite press release |author = Staff |work = Tampa Bay Interstates |url = http://www.mytbi.com/content/users/details.asp?newsid=2055 |title = New Eastbound I-4 Lane Open! |publisher = Florida Department of Transportation |date = August 8, 2006 |url-status = dead |archive-url = https://web.archive.org/web/20070926220826/http://www.mytbi.com/content/users/details.asp?newsid=2055 |archive-date = September 26, 2007 }} Also, the eastbound I-4 exit ramp to Columbus Drive/50th Street is situated to the left-hand side of the highway (as opposed to its former right-hand side exit). This exit shift went into effect in spring 2006 and is part of the new, permanent Interstate configuration.

In Tampa, the exit to 40th Street (SR 569), exit 2, was closed and demolished in late 2005 due to the ongoing reconstruction of I-4 and to accommodate a proposed connector highway with the Lee Roy Selmon Expressway.{{cite web |author = Staff |work = Tampa Bay Interstates |url = http://www.mytbi.com/urs/content/Design/I4-CrosstownConnector/index.asp |title = I-4/Crosstown Connector Project Page |publisher = Florida Department of Transportation |url-status = dead |archive-url = https://web.archive.org/web/20081014034357/http://www.mytbi.com/urs/content/Design/I4-CrosstownConnector/index.asp |archive-date = October 14, 2008 }}

The interchange with what is today I-75 was constructed in the early 1980s.

File:FL 2 I4 FHWA 62 63 75280 3417.jpg

As Orlando grew in the 1970s and 1980s, traffic became a growing concern, especially after the construction of the original interchange with the East–West Expressway in 1973, which proved to become a principal bottleneck. The term "highway hostages" was coined in the 1980s to describe people stuck in long commutes to and from Orlando on I-4.{{cite news |last1 = Kunerth |first1 = Jeff |title = Atlanta's Road Work Nearly Finished - For Now |url = https://www.orlandosentinel.com/news/os-xpm-1989-07-03-8907030217-story.html |access-date = August 7, 2021 |work = Orlando Sentinel |date = July 3, 1989 }}

File:Altamonte-springs.JPG

File:Orlando, Florida - Downtown from I-4 East.jpg

In the early-to-mid-1990s, several interchanges near Kissimmee were constructed or upgraded to accommodate increasing traffic going to and from Walt Disney World. However, I-4's mainlanes were not widened in the process. Around the same time, SR 417 was extended to I-4.{{Citation needed|date=March 2010}} Improvements to the US 192 junction were completed in 2007.{{cite web |author = Staff |url = http://www.trans4mation.org/?id=169 |archive-url = https://web.archive.org/web/20070503151428/http://www.trans4mation.org/?id=169 |url-status = dead |archive-date = May 3, 2007 |title = US 192 Interchange_Project Overview |work = Trans4mation |publisher = Florida Department of Transportation |access-date = November 27, 2011 }}

The St. Johns River Veterans Memorial Bridge, a two-span, six-lane replacement to the original four-lane bridge over the St. Johns River northeast of Orlando, was completed in 2004.

During the early 2000s, tolled express lanes were being planned in the Orlando area as a traffic congestion relief technique for rush-hour commuters. The name for them was to be Xpress 400, numbered after the state road designation for I-4. The express lanes were slated to extend from Universal Orlando, east to SR 434 in Longwood, and tolls were to be collected electronically via transponders like SunPass and Central Florida Expressway Authority's E-PASS, with prices dependent on the congestion of the eight mainlanes. However, the project was effectively banned by the passage of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users federal transportation bill in 2005, introduced by US Representative John Mica. The plan for tolled express lanes is now moving forward as part of the $2.3-billion I-4 Ultimate project.

Interim improvements to the interchange at SR 408 were completed at the end of 2008.{{cite web |author = Staff |url = http://www.trans4mation.org/?id=166 |archive-url = https://web.archive.org/web/20070218021123/http://www.trans4mation.org/?id=166 |url-status = dead |archive-date = February 18, 2007 |title = I-4 Trans4mation (FSTR 408 Interchange Project) |work = Trans4mation |publisher = Florida Department of Transportation |access-date = November 27, 2011 }} The eastbound exit to Robinson Street (SR 526) permanently closed on April 25, 2006, to make way for construction of the new eastbound onramp from SR 408.{{cite news |publisher = Central Florida News 13 |location = Orlando |url = http://cfn13.com/StoryHeadline.aspx?id=15141 |title = On the Move |date = April 25, 2006 |url-status = dead |archive-url = https://web.archive.org/web/20060524030747/http://www.cfn13.com/StoryHeadline.aspx?id=15141 |archive-date = May 24, 2006 }} The westbound offramp to Gore Street was permanently closed in the same project on November 2, 2008.

The new overpass from I-4 west to John Young Parkway (CR 423) opened the morning of April 27, 2006.{{cite news |last1 = Hamburg |first1 = Jay |title = Rising above I-4 Crowds |url = http://www.orlandosentinel.com/news/custom/growth/orl-newramp2606apr26,0,4440651.story?coll=orl-news-growth-headlines |access-date = May 11, 2021 |work = Orlando Sentinel |date = April 26, 2006 |archive-url = https://archive.today/20210511040612/https://www.orlandosentinel.com/news/os-xpm-2006-04-26-newramp26-story.html |archive-date = May 11, 2021 |url-status = unfit }}{{cbignore}}{{cite news |publisher = WESH-TV |location = Daytona Beach |url = http://www.wesh.com/news/9017982/detail.html |title = Changes Under Way on I-4 |date = April 26, 2006 |url-status = dead |archive-url = https://web.archive.org/web/20120206160300/http://www.wesh.com/news/9017982/detail.html |archive-date = February 6, 2012 }}{{cite news |publisher = Central Florida News 13 |location = Orlando |url = http://cfn13.com/StoryHeadline.aspx?id=15164 |title = On the Move |date = April 26, 2006 }}{{dead link|date=June 2016|bot=medic}}{{cbignore|bot=medic}}

The final four-lane segment of I-4, from SR 44 to I-95, was widened to six lanes. Completed in winter 2016–2017, the whole highway is at least six lanes wide.{{cite web |title = 408464-1 I-4 widening from SR 44 to East of I-95 |url = http://www.cflroads.com/project/408464-1/I-4_widening_from_SR_44_to_East_of_I-95 |url-status = dead |archive-url = https://web.archive.org/web/20150221054802/http://www.cflroads.com/project/408464-1/I-4_widening_from_SR_44_to_East_of_I-95 |archive-date = February 21, 2015 |access-date = February 18, 2015 |website = Central Florida Roads |publisher = Florida Department of Transportation }}

File:I-4 Ultimate Express Lanes.jpg

A $2.3-billion (in year-of-expenditure dollars) project—dubbed I-4 Ultimate—reconstructed a {{convert|21|mi|km|adj=on}} stretch of I-4 through Orlando from SR 435 (exit 75) east to SR 434 (exit 94).{{cite web |author = Staff |url = http://www.moving-4-ward.com |title = Future I-4 Improvements |work = Moving-4-Ward |publisher = Florida Department of Transportation |access-date = February 18, 2013 }} The most noticeable change is the addition of four variable-toll express lanes along this section, called I-4 Express. The toll rates maintain an average speed of {{convert|60|mph|km/h|abbr=on}}. Additionally, the general-use lanes were rebuilt, 15 major interchanges were reconfigured, 53 new bridges were added, and 75 bridges were replaced.{{cite web |title = FAQs |url = http://i4ultimate.com/project-info/faqs/ |website = I-4 Ultimate |date = July 9, 2014 |publisher = Florida Department of Transportation |access-date = January 22, 2015 }} A pedestrian bridge was built over the highway near Maitland Boulevard, with a second pedestrian bridge being built over SR 435 at the intersection with both Major Boulevard and Tom Williams Way.{{cite web |title = Special Features |url = http://i4ultimate.com/project-info/special-features/ |website = I-4 Ultimate |date = July 9, 2014 |publisher = Florida Department of Transportation |access-date = February 19, 2015 }} A pedestrian tunnel was constructed under SR 436. The project also reduced the curve radius and improved line-of-sight along the notorious Fairbanks Curve south of Fairbanks Avenue, which is the most accident-prone section of I-4.{{cite web |title = Fairbanks Ave. / Winter Park |url = http://i4ultimate.com/project-info/future-i-4/#info587 |website = I-4 Ultimate |date = July 9, 2014 |publisher = Florida Department of Transportation |access-date = February 19, 2015 }}{{cite news |title = I-4 Ultimate Project to Address Dangerous Fairbanks Curve |url = http://www.wftv.com/news/news/local/i-4-ultimate-project-addres-dangerous-fairbanks-cu/nkDhP/ |access-date = February 19, 2015 |location = Orlando |publisher = WFTV-TV |date = February 18, 2015 |archive-url = https://web.archive.org/web/20150219135323/http://www.wftv.com/news/news/local/i-4-ultimate-project-addres-dangerous-fairbanks-cu/nkDhP/ |archive-date = February 19, 2015 |url-status = dead }}

FDOT proposed adding barrier-separated high-occupancy vehicle (HOV) lanes to I-4 through Greater Orlando in the 1990s, possibly funded by tolls,{{cite news |last1 = Roy |first1 = Roger |title = Express Lanes Lead Alternatives to Avoid I-4 Jams |url = https://www.orlandosentinel.com/1993/08/23/express-lanes-lead-alternatives-to-avoid-i-4-jams/ |access-date = February 19, 2015 |work = Orlando Sentinel |date = August 23, 1993 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219150550/http://articles.orlandosentinel.com/1993-08-23/news/9308230319_1_express-lanes-new-lanes-special-lanes |url-status = live }}{{cite news |last1 = Roger |first1 = Roy |title = I-4 Plan: Promote Car Pools, Light Rail |url = https://www.orlandosentinel.com/1995/08/18/i-4-plan-promote-car-pools-light-rail/ |access-date = February 19, 2015 |work = Orlando Sentinel |date = August 18, 1995 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219150818/http://articles.orlandosentinel.com/1995-08-18/news/9508180126_1_kimbler-express-lanes-car-pools |url-status = live }} but proposals for express lanes (including reversible toll lanes and high-occupancy toll [HOT] lanes) were blocked by politics for the next 15 years. In 2012, a legislative ban on tolls along I-4, which had been in place for seven years, ended, and FDOT began soliciting private enterprises to build and help finance the project in a public–private partnership.{{cite news |last1 = Tracy |first1 = Dan |title = State Seeks Investors to Help Foot Bill to Build I-4 Toll Lanes |url = https://www.orlandosentinel.com/2012/07/08/state-seeks-investors-to-help-foot-bill-to-build-i-4-toll-lanes/ |access-date = February 19, 2015 |work = Orlando Sentinel |date = July 8, 2012 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219151148/http://articles.orlandosentinel.com/2012-07-08/news/os-interstate-4-tolls-20120708_1_lexus-lanes-toll-lanes-toll-money |url-status = live }} In February 2013, the state legislature and governor gave approval for FDOT to proceed with the public–private partnership on this section of I-4 in February 2013,{{cite news |last1 = Orben |first1 = Bill |title = FDOT Gets Backing on $2.1B I-4 Project |url = http://www.bizjournals.com/orlando/morning_call/2013/02/fdot-gets-backing-on-21b-i-4-project.html |work = Orlando Business Journal |access-date = February 19, 2015 |date = February 4, 2013 }} and, the following year, FDOT selected I-4 Mobility Partners to design, construct, finance, maintain, and operate the project for 40 years. FDOT and I-4 Mobility Partners reached commercial and financial close, and a public–private partnership concession agreement was executed in September 2014.{{cite press release |title = FDOT and I-4 Mobility Partners Reach Commercial and Financial Close for I-4 Ultimate Project |url = http://i4ultimate.com/documents/2014/09/2014-09-05-I-4-Ultimate-Press-Release-Fin-and-Comm-Close.pdf |website = I-4 Ultimate |publisher = Florida Department of Transportation |access-date = January 22, 2015 |date = September 9, 2014 }} The final design phase began in October 2014.{{cite news |last1 = Fluker |first1 = Anjali |title = FDOT Shares New I-4 Ultimate Design, Construction Milestones |url = http://www.bizjournals.com/orlando/blog/2014/11/fdot-shares-new-i-4-ultimate-design-construction.html?page=all |access-date = January 22, 2015 |work = Orlando Business Journal |date = November 3, 2014 }} On February 1, 2015, FDOT turned the project over to I-4 Mobility Partners,{{cite news |last1 = Vargas |first1 = Lena |title = I-4 Ultimate Project Underway in Orange, Seminole Counties |url = http://www.mynews13.com/content/news/cfnews13/news/article.html/content/news/articles/cfn/2015/2/1/i4_ultimate.html |access-date = February 18, 2015 |location = Orlando |publisher = Central Florida News 13 |date = February 2, 2015 }} and, on February 18, transportation officials and the governor held a groundbreaking ceremony for the project in Maitland.{{cite news |last1 = Tracy |first1 = Dan |title = I-4 Ultimate Overhaul Gets Ceremonial Start |url = http://www.orlandosentinel.com/news/breaking-news/os-i4-official-groundbreaking-20150217-story.html |access-date = February 18, 2015 |work = Orlando Sentinel }} After seven years of construction, the express lanes opened to traffic the morning of February 26, 2022, and began tolling on March 3, 2022.{{cite news |last1 = Spear |first1 = Kevin |title = I-4 Express lanes are expected to open by month's end |url = https://www.orlandosentinel.com/news/transportation/os-ne-i4-toll-lane-open-soon-20220209-srzpvkyil5gj5jdhnra554efpu-story.html |access-date = February 16, 2022 |work = Orlando Sentinel |date = February 9, 2022 }}{{Cite web |date = February 25, 2022 |title = I-4 Express Opening February 26 |url = https://i4express.com/2022/02/25/i-4-express-opening-february-26/ |access-date = March 17, 2022 |website = I4Express.com |language = en-US |archive-date = March 16, 2022 |archive-url = https://web.archive.org/web/20220316153831/https://i4express.com/2022/02/25/i-4-express-opening-february-26/ |url-status = dead }}

{{main|Wekiva Parkway}}

After spending $255 million dollars, FDOT completed the Wekiva Parkway by building 2.63 miles of expressway between Orange Boulevard and the I-4/SR 417 junction in Sanford.{{Cite web |title = Wekiva Parkway Section 8: Fact Sheet |url = https://www.wekivaparkway.com/wpcms/data/img/uploads/files/WP_Section%208_FactSheet.pdf |access-date = December 26, 2024 |website = WekivaParkway.com |language = en-US }} The project was completed on January 26, 2024, completing the beltway around Central Florida.{{cite news |last1=Trezza |first1=Matt |title=Wekiva Parkway, 25-mile toll road, officially opens in Central Florida |url=https://www.fox35orlando.com/news/fl-transport-officials-cut-ribbon-on-last-part-of-wekiva-parkway |access-date=January 31, 2024 |work = Fox 35 Orlando |location = Orlando, Florida |publisher=WOFL-TV |date=January 26, 2024}} The project also involves building future I-4 Beyond the Ultimate lanes from SR 417 to SR 46.

I-4 Beyond the Ultimate, which includes proposed extensions of the I-4 Express toll lanes, both southwest and northeast of the I-4 Ultimate project, are being considered. In 2013, FDOT initiated a study to reevaluate previous feasibility studies, made between 1998 and 2005, in which the addition of HOV or express toll lanes were considered.{{cite web |title = Original Documents |url = http://www.i4express.com/original_documents.shtm |website = Interstate 4 Beyond the Ultimate |publisher = Florida Department of Transportation |access-date = February 19, 2015 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219135644/http://www.i4express.com/original_documents.shtm |url-status = dead }} The extensions cover approximately {{convert|40|mi|km}} of I-4 through Greater Orlando. Southwest of the I-4 Ultimate, the study is examining an extension through Osceola County to US 27 in Polk County. Northeast of the I-4 Ultimate, the study is examining an extension through Seminole County to SR 472 in Volusia County.{{cite web |title = Frequently Asked Questions |url = http://www.i4express.com/project_faq.shtm |website = Interstate 4 Beyond the Ultimate |publisher = Florida Department of Transportation |access-date = February 19, 2015 |archive-date = February 15, 2015 |archive-url = https://web.archive.org/web/20150215211851/http://i4express.com/project_faq.shtm |url-status = dead }}

In addition to these express lane extensions, many interchanges will be reconstructed as part of the project. Some of these reconstructed interchanges will be converted to diverging diamond interchanges, which are proposed at both CR 532 (exit 58; implemented on July 10, 2022) and SR 482 (exit 74A; implemented on March 9, 2024). A brand new interchange at Daryl Carter Parkway is also proposed to be a diverging diamond.

Unlike I-4 Ultimate, where the {{convert|21|mi|km}} encompassed by that project were constructed at once, the {{convert|40|mi|km}} encompassed by I-4 Beyond the Ultimate will be constructed in phases.{{Cite web |title = Project Info & Map: Find out what's happening in your area. |url = https://i4beyond.com/project-info-map/ |access-date = October 2, 2022 |website = I-4 Beyond the Ultimate |language = en }}

As part of the "Moving Florida Forward" initiative, construction of I-4 widening between Championsgate and Osceola Parkway will add additional lanes on this 15-mile segment, which is expected to begin construction in late 2024.{{Cite web |date=2024-04-03 |title=Construction to begin this year for I-4 widening project, DeSantis says |url=https://www.wfla.com/news/politics/gov-desantis-expected-to-sign-transportation-bill-in-polk-city/ |access-date=2024-04-06 |website=WFLA |language=en-US}}

Express toll lanes are also being considered for I-4 in the Tampa Bay area. In January 2015, FDOT unveiled its master plan for a system of express toll lanes—dubbed Tampa Bay Express (TBX)—on I-4, I-75, and I-275 and began public meetings for community input.{{cite press release |first = Kris |last = Carson |title = FDOT Media Advisory |url = http://www.tampabayexpress.com/wp-content/uploads/2015/01/TBX-media-advisory.pdf |website = Tampa Bay Express |publisher = Florida Department of Transportation |access-date = February 19, 2015 |date = January 16, 2015 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219150049/http://www.tampabayexpress.com/wp-content/uploads/2015/01/TBX-media-advisory.pdf |url-status = dead }} On I-4, these lanes would extend approximately {{convert|26|mi|km}} from I-275 to west of the Polk Parkway (SR 570). At the junction with I-275, the initial concept alignment calls for a direct connection between the express toll lanes of both highways.{{cite map |title = Master Plan Project: I-275 from South of SR 60 to North of MLK Boulevard (3) |url = http://www.tampabayexpress.com/wp-content/uploads/2015/02/MP-3-3-of-4-I-275-S-OF-SR 60-TO-N-OF-MLK.pdf |via = Tampa Bay Express |publisher = Florida Department of Transportation |access-date = February 19, 2015 |format = PDF |date = January 2015 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219143021/http://www.tampabayexpress.com/wp-content/uploads/2015/02/MP-3-3-of-4-I-275-S-OF-SR 60-TO-N-OF-MLK.pdf |url-status = dead }} Express bus lanes for regional service and a long-distance bus service were studied for inclusion in the plan. The I-4 corridor was considered in the bus lane study,{{cite web |title = Express Bus in the Tampa Bay Express Lanes (Draft) |url = http://www.planhillsborough.org/express-bus-in-the-tampa-bay-express-lanes/ |publisher = Hillsborough County City-County Planning Commission |access-date = February 19, 2015 |archive-url = https://web.archive.org/web/20140928183817/http://www.planhillsborough.org/express-bus-in-the-tampa-bay-express-lanes/ |archive-date = September 28, 2014 }} but the resultant proposal included installation only on I-275 and I-75.{{cite web |title = Express Bus in Tampa Bay Express Lanes |url = http://www.tampabayexpress.com/wp-content/uploads/2015/01/FDOT-40-Bus-Toll-Lanes_v4.pdf |website = Tampa Bay Express |publisher = Florida Department of Transportation |access-date = February 19, 2015 |date = January 2015 |archive-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219143408/http://www.tampabayexpress.com/wp-content/uploads/2015/01/FDOT-40-Bus-Toll-Lanes_v4.pdf |url-status = dead }}. FDOT said that the project will be completed in the near future.

{{update section|date=November 2016}}

Connections with two new expressways are planned. The Wekiva Parkway—a {{convert|25|mi|km|adj=on}} segment of SR 429—will connect to SR 417 at the I-4 interchange in Sanford. When completed in 2023, it will complete the beltway around Orlando, although the southern ends of SR 429 and SR 417 do not connect and are separated by a {{convert|3.4|mi|km|adj=on}} drive along I-4.{{cite web |title = Frequently Asked Questions |url = http://wekivaparkway.com/faq.php |website = Wekiva Parkway |publisher = Florida Department of Transportation/Central Florida Expressway |access-date = February 19, 2015 }} On October 21, 2022, the first part of this connection opened to traffic, with the westbound I-4 to southbound SR 429 ramp opening to traffic, along with the section of the southbound lanes between the ramp and SR 46. The Central Polk Parkway is a planned tolled expressway in eastern Polk County that will connect I-4 near Davenport with the Polk Parkway near Bartow; it is currently in the design phase, but funding for right-of-way acquisition of the initial segments is not planned until fiscal year 2019–2020.{{cite web |title = Central Polk Parkway |url = http://www.centralpolkparkway.com/ |website = Central Polk Parkway |publisher = Florida Department of Transportation |access-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150223155730/http://www.centralpolkparkway.com/ |archive-date = February 23, 2015 |url-status = dead |df = mdy-all }} Additionally, FDOT is conducting a feasibility study for a {{convert|5|to|11.5|mi|adj=on|km}}{{cite web |title = Draft Summary of Potential Environmental Impacts: Preliminary Corridors |url = http://www.i4poincianaconnector.com/images/i4ppc_Summary-of-impacts-preliminary-corridors.pdf |website = I-4 Poinciana Parkway Connector |publisher = Florida Department of Transportation |access-date = February 19, 2015 |date = December 2013 |archive-url = https://web.archive.org/web/20150219142238/http://www.i4poincianaconnector.com/images/i4ppc_Summary-of-impacts-preliminary-corridors.pdf |archive-date = February 19, 2015 |url-status = dead }} connection between I-4 and the Poinciana Parkway—a short, tolled expressway completed in 2016 between US 17/US 92 and the community of Poinciana.{{cite web |title = About the Study |url = http://www.i4poincianaconnector.com/about-the-study.shtm |website = I-4 Poinciana Parkway Connector |publisher = Florida Department of Transportation |access-date = February 19, 2015 |archive-url = https://web.archive.org/web/20150219135248/http://www.i4poincianaconnector.com/about-the-study.shtm |archive-date = February 19, 2015 |url-status = dead }}{{cite map |title = Project Study Area |url = http://www.i4poincianaconnector.com/images/project-location-map-lrg.pdf |via = I-4 Poinciana Parkway Connector |publisher = Florida Department of Transportation |access-date = February 19, 2015 |format = PDF |archive-url = https://web.archive.org/web/20150219141744/http://www.i4poincianaconnector.com/images/project-location-map-lrg.pdf |archive-date = February 19, 2015 |url-status = dead }}

Despite the cancellation of the Florida High-Speed Corridor in 2011, the following year, All Aboard Florida, now Brightline, announced its intentions to build an inter-city rail route between Miami and Orlando, which eventually began operations in September 2023. Brightline is currently in the planning stages of developing an expansion of service between Orlando and Tampa using the I-4 right-of-way.{{Cite web |date=2024-01-07 |title=Florida bill would preserve Interstate 4 route for Brightline extension to Tampa |url=https://www.trains.com/trn/news-reviews/news-wire/florida-bill-would-preserve-interstate-4-route-for-brightline-extension-to-tampa/ |access-date=2024-04-06 |website=Trains |language=en-US}}

In 2014, FDOT began a study of the feasibility of extending the SunRail commuter train line to Daytona Beach, primarily focusing on the use of the I-4 median. The ongoing widening project from SR 44 to I-95 maintains a median wide enough to accommodate a future rail line.{{cite news |last1 = Harper |first1 = Mark |title = Volusia Supports $2.5M Study of SunRail to Daytona |url = http://www.news-journalonline.com/article/20140417/NEWS/140419440?p=1&tc=pg |access-date = August 20, 2014 |work = Daytona Beach News Journal |date = April 17, 2014 }}

{{jcttop|old|length_ref={{cite web |author = Florida Department of Transportation |url = http://www.dot.state.fl.us/planning/statistics/hwydata/interchange.pdf |title = Florida Department of Transportation Interchange Report |date = August 4, 2010 |publisher = Florida Department of Transportation |pages = 2–3 |access-date = November 2, 2010 |url-status = dead |archive-url = https://web.archive.org/web/20120208015944/http://www.dot.state.fl.us/planning/statistics/hwydata/interchange.pdf |archive-date = February 8, 2012 }}{{cite web |author = Florida Department of Transportation |url = http://www2.dot.state.fl.us/Straight-linesOnlineGIS/ |publisher = Florida Department of Transportation |title = Straight Line Diagrams |access-date = March 8, 2014 |url-status = dead |archive-url = https://web.archive.org/web/20140306153400/http://www2.dot.state.fl.us/Straight-linesOnlineGIS/ |archive-date = March 6, 2014 }}}}

{{FLint|old

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{{jct|state=FL|SR|400|dir1=begins|noshield=yes}}

|notes=Western terminus of I-4/SR 400; west end of the concurrency with SR 400; Exit 45B (I-275)

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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|notes=Access via I-4–Selmon Expressway Connector (left exits, both directions); access to or from SR 618 only in the same direction}}

{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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|notes=Serves Dinosaur World

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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{{FLint|old

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|old=17

|exit=31

|road={{jct|state=FL|SR|539|city1=Kathleen|city2=Lakeland}}

}}

{{FLint|old

|mile=32.003

|old=18

|exit=32

|road={{jct|state=FL|US|98|city1=Lakeland|city2=Dade City}}

}}

{{FLint|old

|mile=33.440

|old=19

|exit=33

|road={{jct|state=FL|SR|33|CR|582|county2=Polk|city1=Lakeland}}

|notes=CR 582 not signed eastbound

}}

{{FLint|old

|mile=37.894

|old=20

|exit=38

|road={{jct|state=FL|SR|33}}

}}

{{FLint|old

|type=etc

|mile=41.223

|old=20A

|exit=41

|road={{jct|state=FL|Toll|570|dir1=west|name1=Polk Parkway|city1=Auburndale|city2=Lakeland}}

|notes= SR 570 exit 24; serves Florida Polytechnic University (southwest corner of interchange)

}}

{{FLint|old

|location=Auburndale

|mile=43.981

|old=21

|exit=44

|road={{jct|state=FL|SR|559|city1=Polk City|city2=Auburndale}}

|notes=Serves Fantasy of Flight

}}

{{FLint|old

|location=none

|mile=47.982

|old=22

|exit=48

|road={{jct|state=FL|CR|557|county1=Polk|city1=Lake Alfred|city2=Winter Haven}}

}}

{{FLint|old

|location=none

|mile=54.733

|old=23

|exit=55

|road={{jct|state=FL|US|27|city1=Haines City|city2=Clermont|extra=hospital}}

|notes=Serves Legoland Florida, Peppa Pig Theme Park and Heart of Florida Regional Medical Center

}}

{{FLint|old

|county1=Polk

|county2=Osceola

|location=Four Corners

|lspan=2

|mile=57.723

|old=24

|exit=58

|road={{jct|state=FL|CR|532|county1=Osceola|city1=Poinciana|city2=Kissimmee}}

|notes=Diverging diamond interchange; implemented July 10, 2022

}}

{{FLint|old

|county=Osceola

|cspan=4

|type=etc

|mile=59.663

|old=

|exit=60

|road={{jct|state=FL|Toll|429|dir1=north|name1=Western Expressway|city1=Apopka}}

|notes= Exit 1 (SR 429)

}}

{{FLint|old

|location=Celebration

|lspan=3

|mile=61.781

|old={{nowrap|24C-D-E}}

|exit=62

|road={{jct|state=FL|Toll|417|dir1=north|name1=Central Florida GreeneWay|location1=Disney World|city2=Celebration|extra=airport|location3=Orlando International Airport|city4=Sanford}}

|notes=Collector/distributor lanes serve two junctions with one exit: full interchange for Celebration/Disney World, eastbound exit and westbound entrance for SR 417

}}

{{FLint|old

|mile=64.165

|old=25A-B

|exit=64

|road={{jct|state=FL|US|192|city1=Kissimmee|location2=Magic Kingdom|extra=hospital}}

|notes=Access to AdventHealth Celebration

}}

{{FLint|old

|mile=65.322

|old=26C-D

|exit=65

|road={{jctname|state=FL|CR|522|county1=Osceola|name1=Osceola Parkway|location1=Animal Kingdom|location2=Hollywood Studios}}

}}

{{FLint|old

|county=Orange

|cspan=37

|location=Lake Buena Vista

|lspan=3

|mile=66.565

|old=26A-B

|exit=67

|road={{jct|state=FL|SR|536|dir1=east|to2=to|Toll|417|dir2=north|extra=airport|location1=Epcot|location2=Disney Springs|location3=Orlando International Airport}}

}}

{{FLint|old

|mile=68.107

|old=27

|exit=68

|road={{jct|state=FL|SR|535|city1=Kissimmee|city2=Lake Buena Vista}}

}}

{{FLint|old

|type=unbuilt

|mile=

|old=

|exit=70

|road=Daryl Carter Parkway

|notes=Future diverging diamond interchange; to be completed in summer 2025{{cite web |title = I-4 at Daryl Carter Parkway Interim Interchange |url = https://i4beyond.com/project-designs/segment-designs/i-4-at-daryl-carter-parkway-interim-interchange/ |website = I-4 Beyond the Ultimate |access-date = April 23, 2025 }}

}}

{{FLint|old

|location=Williamsburg

|lspan=2

|type=incomplete

|mile=70.983

|old=27A

|exit=71

|road=Sea World

|notes=Access via Central Florida Parkway; eastbound exit and westbound entrance

}}

{{FLint|old

|mile=71.744

|old=28

|exit=72

|road={{jct|state=FL|Toll|528|dir1=east|name1=Beachline Expressway|extra=airport|location1=Orlando International Airport|location2=Cape Canaveral}}

|notes=To Sea World, Orange County Convention Center, Kennedy Space Center & Port Canaveral; western terminus of SR 528

}}

{{FLint|old

|location=Orlando

|lspan=28

|mile=73.732

|old=29A

|exit=74A

|road=File:Florida 482.svgFile:Airport Sign.svg{{jct|state=FL|SR|482|noshield1=yes|extra=hospital|dir1=east|name1=Sand Lake Road|location1=International Drive|location2=Orlando International Airport}}

|notes=Diverging diamond interchange; access to Orlando Health Dr. P. Phillips

}}

{{FLint|old

|mile=75.246

|mspan=4

|old={{nowrap|29B

|exit={{nowrap|74B

|road=Universal, Universal Boulevard / International Drive

|notes=Westbound exit 74B, Eastbound exit 75A

}}

{{FLint|old

|type=etc

|mile=none

|old=

|exit=

|road=I-4 Express Lanes

|notes=West end of Express Lanes{{cite web |title = I-4 Express Lanes |url = https://adobeindd.com/view/publications/803501b3-c40d-4898-ba46-447132bdbae2/43ub/publication-web-resources/pdf/2150-Express-Lanes-Informational-Guide-20190415.pdf |website = I-4 Ultimate Improvement Project |publisher = Florida Department of Transportation |access-date = March 10, 2021 |pages = 4–5 }}

}}

{{FLint|old

|mile=none

|old=30B

|exit=75B

|road={{jct|state=FL|SR|435|name1=Kirkman Road|road|International Drive}}

|notes=Split into exits 75A (north) and 75B (south/Int'l Dr.) westbound; Int'l Dr. not signed eastbound; serves Volcano Bay and Fun Spot America

}}

{{FLint|old

|type=etc

|mile=none

|old=

|exit=—

|road=Grand National Drive

|notes=Interchange for Express Lanes only

}}

{{FLint|old

|mile=76.359

|mspan=2

|old=31

|exit=77

|road={{jct|state=FL|FLTP||location1=Miami|city2=Ocala}}

|notes= Exit 259 (Florida's Turnpike)

}}

{{FLint|old

|type=etc

|mile=none

|old=

|exit=—

|road={{jct|state=FL|FLTP||dir1=south}}

|notes=Interchange for Express Lanes only; westbound exit and eastbound entrance

}}

{{FLint|old

|mile=77.760

|old=31A

|exit=78

|road=Conroy Road

|notes=Serves The Mall at Millenia

}}

{{FLint|old

|mile=79.147

|old=32

|exit=79

|road={{jct|state=FL|CR|423|county1=Orange|name1=John Young Parkway}}

}}

{{FLint|old

|mile=80.474

|mspan=2

|old=33A

|exit=80

|road={{jct|state=FL|US|17|US|92|US|441}}

|notes=Westbound exit does not give access to US 17 north, US 92 east, nor US 441 north; formerly signed as exits 80A-B eastbound

}}

{{FLint|old

|type=closed

|mile=none

|old=33B

|exit=80B

|road={{jct|state=FL|US|17|dir1=north|US|92|dir2=east|US|441|dir3=north}}

|notes=Closed; previously eastbound exit and westbound entrance

}}

{{FLint|old

|mile=81.004

|old=34

|ospan=2

|exit=81

|espan=2

|road={{jct|state=FL|road|Michigan Street|to2=to|US|17|dir2=north|US|92|dir3=east|US|441|dir4=north|extra=hospital}}

|notes=Westbound signage

}}

{{FLint

|mile=81.469

|road={{jct|extra=hospital}} Kaley Avenue

|notes=Eastbound signage; access to Orlando Regional Medical Center}}

{{FLint|old

|type=etc

|mile=

|old=

|exit=—

|road={{jct|state=FL|Toll|408|dir1=east}}

|notes=Interchange for Express Lanes only; eastbound exit only

}}

{{FLint|old

|mile=82.116

|mile2=82.78

|mspan=8

|old=36

|exit=82

|road={{jct|state=FL|Toll|408|name1=East–West Expressway|city1=Ocoee|city2=Titusville|location3=UCF}}

|notes=Exit 10A(EB)/10(WB) (SR-408)}}

{{FLint|old

|type=closed

|mile=none

|old=37

|ospan=2

|exit=82B

|espan=2

|road=Gore Street

|notes=Closed; previously westbound entrance only; westbound exit closed

}}

{{FLint

|type=closed

|mile=none

|road=Anderson Street

|notes=Closed; previously westbound exit and eastbound entrance; formerly exit 82C

}}

{{FLint|old

|mile=none

|old=39

|exit=83

|road=South Street, Anderson Street

|notes=Eastbound signed South Street, westbound signed Anderson Street

}}

{{FLint|old

|type=etc

|mile=none

|old=

|exit=

|road=Anderson Street

|notes=Interchange for Express Lanes only; eastbound entrance only

}}

{{FLint|old

|type=etc

|mile=none

|old=

|exit=—

|road=South Street

|notes=Interchange for Express Lanes only; no eastbound entrance

}}

{{FLint|old

|type=etc

|mile=none

|old=

|exit=—

|road={{jct|state=FL|Toll|408|dir1=west}}

|notes=Interchange for Express Lanes only; westbound exit only

}}

{{FLint|old

|type=closed

|mile=none

|old=36

|exit=82A

|road={{jct|state=FL|Toll|408|name1=East–West Expressway}}

|notes=Closed; previous interchange configuration

}}

{{FLint|old

|type=closed

|mile=83.30

|old=40

|exit=83A

|road={{jct|state=FL|SR|526|name1=Robinson Street}}

|notes=Closed; was eastbound exit and westbound entrance

}}

{{FLint|old

|mile=83.792

|old=41

|exit=84A

|road={{jct|state=FL|US|17|US|92|SR|50|name3=Colonial Drive|road|Amelia Street}}

|notes=Formerly signed as exit 83A westbound, 83B eastbound

}}

{{FLint|old

|type=incomplete

|mile=84.279

|mspan=2

|old=42

|ospan=2

|exit=84B

|espan=2

|road={{jct|state=FL|US|17|dir1=south|noshield1=yes|US|92|noshield2=yes|SR|50|dir3=west|name3=Colonial Drive west}}

|notes=Eastbound exit and westbound entrance

}}

{{FLint

|type=incomplete

|mile=none

|road={{jct|state=FL|road|Ivanhoe Boulevard|extra=hospital}}

|notes=Westbound exit and eastbound entrance; also include Express Lane access

}}

{{FLint|old

|mile=85.135

|old=43

|exit=85

|road={{jct|extra=hospital}} Princeton Street

|notes=Access to AdventHealth Orlando

}}

{{FLint|old

|type=incomplete

|mile=85.890

|old=44

|exit=86

|road=Par Street

|notes=Eastbound exit and westbound entrance

}}

{{FLint|old

|location=Winter Park

|lspan=2

|mile=86.789

|old=45

|exit=87

|road={{jct|state=FL|SR|426|name1=Fairbanks Avenue}}

|notes=Access to Rollins College and Winter Park Historic District

}}

{{FLint|old

|mile=87.767

|old=46

|exit=88

|type=concur

|road={{jct|state=FL|SR|423|name1=Lee Road}}

|notes=Western end of the concurrency with US 17 Truck / US 92 Truck; serves Eatonville

}}

{{FLint|old

|location=Maitland

|lspan=2

|mile=89.491

|old=47

|exit={{nowrap|90A-B}}

|type=concur

|road={{jct|state=FL|SR|414|name1=Maitland Boulevard}}

|notes=Access via collector/distributor lanes; eastern end of the concurrency with US 17 Truck / US 92 Truck; signed as exits 90A (east) and 90B (west)

}}

{{FLint|old

|mile=89.491

|old=

|exit=90C

|type=incomplete

|road=Lake Destiny Road

|notes=Westbound exit and entrance via C/D lanes

}}

{{FLint|old

|county=Seminole

|cspan=9

|location=Altamonte Springs

|lspan=2

|mile=91.631

|old=48

|exit=92

|road=File:Florida 436.svgFile:Airport Sign.svg{{jct|state=FL|SR|436|city1=Altamonte Springs|city2=Apopka|noshield1=yes|extra=hospital|location2=Orlando International Airport}}

|notes=Casselberry signed eastbound and Apopka signed westbound as secondary cities; Access to AdventHealth Altamonte Springs and Altamonte Mall

}}

{{FLint|old

|type=etc

|old=

|exit=

|road=Central Parkway

|notes=Interchange for Express Lanes only; eastbound exit and westbound entrance

}}

{{FLint|old

|location=Wekiwa Springs

|lspan=2

|type=etc

|mile=

|old=

|exit=

|road=I-4 Express Lanes

|notes=East end of Express Lanes

}}

{{FLint|old

|mile=93.613

|old=49

|exit=94

|road={{jct|state=FL|SR|434|city1=Longwood|city2=Winter Springs|extra=hospital}}

|notes=Access to Orlando Health South Seminole

}}

{{FLint|old

|location=Lake Mary

|lspan=2

|mile=98.400

|old=50

|exit=98

|road={{jct|extra=airport}} Lake Mary, Heathrow, Sanford Airport

}}

{{FLint|old

|mile=100.628

|old=51A

|exit=101A

|road={{jct|state=FL|CR|46A|county1=Seminole|city1=Sanford|city2=Heathrow}}

}}

{{FLint|old

|location=Sanford

|lspan=2

|type=toll

|mile=101.366

|old=—

|exit=101B-C

|road={{jct|state=FL|Toll|417|Toll|429|dir1=south|dir2=south|name1=Seminole Expressway|name2=Wekiva Parkway|city1=Sanford|city2=Apopka|city3=Mount Dora|extra=airport|location1=Int'l Airports}}

|notes=Ramp from westbound I-4 to southbound SR 429 opened to traffic along with section of southbound lanes of SR 429 to SR 46 on October 21, 2022, remaining connections opened on January 26, 2024"; Exit 55A (SR-417/SR-429)

}}

{{FLint|old

|mile=102.505

|old=51, 101C

|exit=101D

|road={{jct|state=FL|SR|46|city1=Mount Dora|location2=Sanford Historic District}}

}}

{{FLint|old

|location=Lake Monroe

|mile=103.997

|old=52

|exit=104

|road={{jct|state=FL|US|17|US|92|city1=Sanford|extra=hospital}}

|notes=Access to HCA Florida Lake Monroe

}}

{{jctbridge|old

|river=Lake Monroe

|bridge=St. Johns River Veterans Memorial Bridge

}}

{{FLint|old

|county=Volusia

|cspan=9

|location=Deltona

|old=53

|mile=107.821

|exit=108

|road={{jct|state=FL|CR|4162|county1=Volusia|location1=DeBary|location2=Deltona}}

}}

{{FLint|old

|location1=Deltona

|location2=Orange City

|lspan=2

|mile=110.636

|mspan=2

|old=53CA

|exit=111A

|road={{jct|state=FL|CR|4146|county1=Volusia|location1=Deltona}}

}}

{{FLint|old

|mile=none

|old=53CB

|exit=111B

|road={{jct|state=FL|CR|4146|county1=Volusia|location1=Orange City|extra=hospital}}

|notes=Access to AdventHealth Fish Memorial}}

{{FLint|old

|location=Deltona

|mile=113.783

|old=54

|exit=114

|road={{jct|state=FL|extra=hospital}}{{jct|state=FL|SR|472|city1=Deltona|city2=DeLand}}

|notes=Access to Halifax Health UF Health - Medical Center Of Deltona

}}

{{FLint|old

|location=Lake Helen

|mile=115.898

|old=55

|exit=116

|road={{jct|state=FL|CR|4116|county1=Volusia|location1=DeLand|location2=Lake Helen Historic District}}

}}

{{FLint|old

|location=DeLand

|mile=118.456

|old=56

|exit=118

|road={{jct|state=FL|SR|44|city1=New Smyrna Beach|location2=DeLand Historic District}}

|notes=Signed as exits 118A (east) and 118B (west)

}}

{{FLint|old

|location=Daytona Beach

|type=incomplete

|mile=129.131

|old=57

|exit=129

|road={{jct|state=FL|extra=hospital}}{{jct|state=FL|extra=airport|US|92|dir1=east|city1=Daytona Beach}}

|notes=Eastbound exit and westbound entrance; access to Daytona Beach International Airport and Halifax Health Medical Center

|lspan=3}}

{{FLint|old

|type=concur

|mile=131.987

|mile2=132.298

|mspan=2

|old=58

|exit=132A

|road={{jct|state=FL|SR|400|dir1=east|city1=South Daytona}}

|notes=East end of the concurrency with SR 400; eastbound exit and westbound left entrance; Exit 260A (I-95)

}}

{{FLint|old

|mile=none

|old=—

|exit=132B

|road={{jct|state=FL|I|95|US|92|city1=Jacksonville|location2=Miami}}

|notes=Eastern terminus; exit number is for I-95 south; Exit 260B (I-95); US 92 access is part of Exit 260C (I-95)

}}

{{jctbtm|old|keys=closed,concur,etc,incomplete,unbuilt}}

{{Infobox road small

| state = FL

| type = FL

| route = 400

| location = Tampa–Daytona Beach

| length_mi = 136.514

| length_ref =

}}

State Road 400 (SR 400) is an unsigned highway while running concurrently with I-4 from their shared western terminus at I-275 in Tampa through the last eastbound exit before the eastern terminus of I-4, at I-95 in Daytona Beach. SR 400 is named Beville Road beyond I-95 and continues for another {{convert|4.216|mi|km|abbr=on}} to its own eastern terminus at an intersection with US 1 on the city line between Daytona Beach and South Daytona. Sections of the nonconcurrent SR 400 are classified as a "scenic thoroughfare" within Daytona Beach.{{cite web |url = http://library.municode.com/showDocumentFrame.aspx?clientID=13509&docID=0 |title = Scenic Thoroughfare Classification |publisher = Daytona Beach, Florida |work = Land Development Code |via = Municode |url-access = subscription |access-date = November 27, 2011 }}

{{clear}}

{{jcttop|state=FL|length_ref=}}

{{jctgap|text=Overlap with I-4}}

{{FLint

|county=Volusia

|cspan=7

|location=Daytona Beach

|type=concur

|mile=0.000

|mspan=2

|road={{Jct|state=FL|I|4|dir1=west|nolink=yes}}

|notes=Eastern end of I-4 overlap; eastbound left exit and westbound entrance; Exit 132A (I-4)

|lspan=4}}

{{FLint

|location=

|type=incomplete

|mile=none

|road={{Jct|state=FL|I|95|city1=Jacksonville|location2=Miami}}

|notes=Interchange; westbound exit and eastbound entrance; eastbound access via I-4; Exits 260A-B (I-95)

}}

{{FLint

|location=

|lspan=

|mile=0.271

|road={{jct|state=FL|CR|4009|county1=Volusia|name1=South Williamson Boulevard|location1=Int'l Airport|location2=Int'l Speedway}}

}}

{{FLint

|mile=2.181

|road={{Jct|state=FL|SR|483|dir1=north|name1=South Clyde Morris Boulevard}}
{{Jct|state=FL|CR|483|county1=Volusia|dir1=south|name1=South Clyde Morris Boulevard}}

}}

{{FLint

|location1=Daytona Beach

|location2=South Daytona

|lspan=3

|mile=2.852

|road={{Jct|state=FL|SR|5A|name1=Nova Road|location1=Museum|location2=Bethune Cookman University}}

}}

{{FLint

|mile=4.216

|mspan=2

|road={{Jct|state=FL|US|1|name1=South Ridgewood Avenue|city1=Daytona Beach|city2=South Daytona|location3=Convention Center}}

|notes=Eastern terminus}}

{{FLint

|type=incomplete

|mile=none

|road=Beville Road east

|notes=One-way street, outbound access only; continuation beyond US 1}}

{{jctbtm|keys=concur,incomplete}}

{{start srbox}}

{{fl browse|previous_type=FL|previous_route=399|route=SR 400|next_type=FL|next_route=401}}

{{s-end}}

In the 2004 US presidential election in Florida, the I-4 corridor, a commonly used term to refer to the counties in which I-4 runs through and a site of significant population growth, was a focus of political activity within the swing state. Communities along the I-4 corridor were perceived by both major political parties as having higher proportions of undecided voters as compared to more Republican- or Democratic-leaning portions of the state. It played an equally key role in the 2008 US presidential election in Florida but, whereas the corridor had voted heavily for George W. Bush in 2004, which helped Bush win the state, in 2008, it swung behind Democratic candidate Barack Obama, helping Obama win Florida.{{cite news |publisher = CNN |url = http://www.cnn.com/2004/ALLPOLITICS/10/11/campaign.florida.reut/index.html |title = Candidates Eye Voters on Florida's I-4 |date = October 11, 2004 }}

Between 1996 and 2012, the I-4 corridor voted for the statewide winner. However, in the 2016 and 2020 elections, Republican Donald Trump carried the state without winning the region. The Republicans carried the region three times while the Democrats carried the region five times in the past eight presidential elections. Republicans George H. W. Bush and George W. Bush won more votes than other candidates in 1992, 2000, and 2004, while Democrats Bill Clinton, Barack Obama, Hillary Clinton, and Joe Biden captured the region's vote total in the elections of 1996, 2008, 2012, 2016, and 2020.

Trump again won the 2024 United States presidential election in Florida. WKMG-TV reported that because of the size of his victory of more than 13%, Florida was no longer a swing state. Noting that Trump had won all nine central Florida counties except Orange County, the station said that "the days of the I-4 corridor being a thing [are] no more".{{Cite AV media |url=https://www.youtube.com/watch?v=vCYE2ozMOMs |title=Trump wins Florida in big way |date=2024-11-05 |last=WKMG News 6 ClickOrlando |access-date=2024-11-25 |via=YouTube}}

{{Portal|Florida|U.S. Roads}}

• War on I-4 – The college rivalry between the University of South Florida and University of Central Florida.
• Hurricane Donna (1960) – A category 4 hurricane that tracked directly over I-4.
• Hurricane Charley (2004) – Another category 4 hurricane that tracked directly over I-4 and is sometimes referred to as the "I-4 Hurricane"
• Hurricane Ian (2022) – A third category 4 hurricane that tracked close to I-4.

{{Clear}}

{{reflist}}

{{Commons category|Interstate 4}}

{{AttachedKML|display=title,inline}}

FDOT websites about Interstate 4:

• [https://www.fdottampabay.com/projects/road/i-4/all Tampa Bay/West Central Florida Roads]—current and future projects on I-4 in Hillsborough County
• [https://www.cflroads.com/projects/Road/I4/All Central Florida Roads]—current and future projects on I-4 in Osceola, Orange, Seminole, and Volusia counties
• [https://i4express.com/ I-4 Express]—trip planners, FAQs and general information on using the now completed toll-managed express lanes through Orlando.

FDOT websites about specific I-4 projects and proposals:

• [http://i4ultimate.com/ I-4 Ultimate]—project info about I-4 Ultimate in the Orlando area
• [https://i4beyond.com/ I-4 Beyond the Ultimate]—information about proposed extensions of express lanes on both sides of the I-4 Ultimate project.
• [http://www.tampabayexpress.com/ Tampa Bay Express]—information about the proposed express lanes on Interstates 4, 75, & 275 in the Tampa Bay area.
• [https://web.archive.org/web/20150219122629/http://www.i4poincianaconnector.com/index.shtm I-4 Poinciana Parkway Connector]—information about a feasibility study being conducted for a connection between I-4 and the Poinciana Parkway

{{Interstates}}

{{DEFAULTSORT:I04}}

04

04

Category:Expressways in Florida

Category:Expressways in Orange County, Florida

Category:Expressways in Orlando, Florida

Category:Expressways in Hillsborough County, Florida

Category:Expressways in Tampa, Florida

Category:Expressways in the Tampa Bay area

Category:Transportation in Hillsborough County, Florida

Category:Transportation in Polk County, Florida

Category:Transportation in Osceola County, Florida

Category:Transportation in Orange County, Florida

Category:Transportation in Seminole County, Florida

Category:Transportation in Volusia County, Florida

Category:1959 establishments in Florida