Interstate 84 in Utah
{{Short description|Section of Interstate Highway in Utah, United States}}
{{Highway detail hatnote|Interstate 84 (Oregon–Utah)}}
{{Use mdy dates|date=January 2014}}
{{Use American English|date=August 2022}}
{{Infobox road
| state = UT
| type = I
| route = 84
| section = 114
| map = {{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-height=290|frame-lat=41.487|frame-long=-112.140|zoom=8|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 84 in Utah}}}}
| map_custom = yes
| map_notes = I-84 highlighted in red
| length_mi = 117.38
| length_ref = {{cite web |date=December 31, 2021 |title=Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways |url=https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |access-date=August 7, 2022 |work=FHWA Route Log and Finder List |publisher=Federal Highway Administration}}
| established = 1977
| direction_a = West
| terminus_a = {{jct|state=ID|I|84}} at Idaho state line
| junction = {{jct|state=UT|I|15}} near Tremonton
{{jct|state=UT|US|91}} in Brigham City
{{jct|state=UT|I|15}} in Riverdale
{{jct|state=UT|US|89}} in Uintah
| direction_b = East
| counties = Box Elder, Weber, Davis, Morgan, Summit
| terminus_b = {{jct|state=UT|I|80}} near Echo
| previous_type = SR
| previous_route = 83
| next_type = SR
| next_route = 85
}}
Interstate 84 (I-84) is a part of the Interstate Highway System that links Portland, Oregon, to I-80 near Echo, Utah. The {{convert|117.38|mi|km|adj=mid|-long}} segment in the US state of Utah is the shortest of any of the three states the western I-84 passes through and contains the eastern terminus of the highway. I-84 enters Box Elder County near Snowville before becoming concurrent with I-15 in Tremonton. The concurrent highways travel south through Brigham City and Ogden and separate near Ogden-Hinckley Airport. Turing east along the Davis County border, I-84 intersects US Route 89 (US-89) and enters Weber Canyon as well as Morgan County. While in Morgan County, I-84 passes the Devil's Gate-Weber Hydroelectric Power Plant and Devil's Slide rock formation. Past Morgan, the highway crosses into Summit County, past the Thousand Mile Tree before reaching its eastern terminus at I-80 near Echo.
Construction of the controlled-access highway was scheduled in late 1957 under the designations Interstate 82S (I-82S) and Interstate 80N (I-80N). The I-82S designation was only applied on paper for about a year, but the I-80N designation was the highway's official designation until 1977 when it was renumbered I-84 by the American Association of State Highway and Transportation Officials (AASHTO). By 1986, construction of the freeway had been completed across the three states. Average traffic in 2012, along the non-concurrent parts of I-84, ranged from as few as 6,655 vehicles traveling along I-84 at the interchange with State Route 86 (SR-86) in Henefer, and as many as 18,945 vehicles used the highway at the SR-26 interchange in Riverdale.
Route description
Out of the three states that the western portion of I-84 passes through, the {{convert|117.38|mi|km|adj=mid|-long}} segment in Utah is the shortest. By comparison, the longest stretch of western I-84 through a single state is the {{convert|375.17|mi|km|adj=mid|-long}} segment in Oregon. I-84 also has a noncontiguous eastern segment that passes through Pennsylvania, New York, Connecticut, and Massachusetts: all four of these segments are shorter than the Utah segment.
Every year, the Utah Department of Transportation (UDOT) conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of annual average daily traffic (AADT), a measure of traffic volume for any average day of the year. In 2012, UDOT calculated that as few as 6,655 vehicles traveled I-84 at the interchange with SR-86 in Henefer, and as many as 18,945 vehicles used the highway at the SR-26 interchange in Riverdale.{{cite book |type = Report |url = http://www.udot.utah.gov/main/uconowner.gf?n=7502314351643878 |title = Traffic on Utah Highways |page = 16 |year = 2012 |access-date = December 27, 2013 |publisher = Utah Department of Transportation |format = PDF |author = Utah Department of Transportation |author-link = Utah Department of Transportation |archive-date = September 2, 2015 |archive-url = https://web.archive.org/web/20150902170402/http://www.udot.utah.gov/main/uconowner.gf?n=7502314351643878 |url-status = dead }} Between 27 and 57 percent of the traffic recorded consisted of trucks.{{cite book |type = Report |url = http://www.udot.utah.gov/main/uconowner.gf?n=11139106792388678 |title = Truck Traffic on Utah Highways |pages = 15 |year = 2012 |access-date = December 25, 2013 |publisher = Utah Department of Transportation |format = PDF |author = Utah Department of Transportation |archive-date = September 2, 2015 |archive-url = https://web.archive.org/web/20150902170415/http://www.udot.utah.gov/main/uconowner.gf?n=11139106792388678 |url-status = dead }} These counts are of the portion of the freeway in Utah and are not reflective of the entire Interstate or of its concurrency with I-15. As part of the Interstate Highway System,{{cite journal |last = Slater |first = Rodney E. |date = Spring 1996 |title = The National Highway System: A Commitment to America's Future |journal = Public Roads |volume = 59 |issue = 4 |url = https://highways.dot.gov/public-roads/spring-1996/national-highway-system-commitment-americas-future |access-date = January 24, 2011 }} the entire route is listed on the National Highway System, a system of roads that are important to the nation's economy, defense, and mobility.{{cite map |author = Federal Highway Administration |title = National Highway System: Utah |url = https://www.fhwa.dot.gov/planning/national_highway_system/nhs_maps/utah/ut_Utah.pdf |access-date = December 27, 2013 |date = November 18, 2013 |scale = 1:772,200 |location = Washington, DC |publisher = Federal Highway Administration }}
=Western segment=
Crossing the Idaho–Utah state line, I-84 enters Box Elder County and the Curlew Valley near farmland that utilizes center-pivot irrigation before intersecting SR-30 at a diamond interchange.{{google maps |url = https://www.google.com/maps/preview#!data=!1m4!1m3!1d825030!2d-112.3919444!3d41.4773975!2m1!1e3!4m29!3m20!1m5!1sInterstate+84%2C+Malad+City%2C+UT+83252!2s0x80ab2642f4ddddfd%3A0xbe52f05313361e6!3m2!3d42.0093271!4d-112.8434984!1m4!3m2!3d40.9711504!4d-111.4422272!6e2!3m8!1m3!1d3248!2d-111.4416157!3d40.9701419!3m2!1i1278!2i828!4f13.1!5m2!13m1!1e1!7m4!11m3!1m1!1e1!2b1&fid=0i7 |title = Interstate 84 Overview |access-date = December 27, 2013 }} The town of Snowville is crossed before passing to the north of the Hansel Mountains and the North Promontory Mountains. The town of Howell, accessible from an interchange with SR-83, lays to the southeast of Blue Creek Reservoir in the Blue Creek Valley. Access to Golden Spike National Historical Park is provided by SR-83 south of Howell. The Blue Spring Hills form the southern border of Howell as I-84 continues southeast.{{cite map |author = Utah Department of Transportation |title = Box Elder County |url = http://www.udot.utah.gov/main/uconowner.gf?n=200312151354062 |access-date = December 27, 2013 |year = 2005 |series = General Highway Map |page = 6 |scale = 1:29,040 |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = October 22, 2013 |archive-url = https://web.archive.org/web/20131022202155/http://www.udot.utah.gov/main/uconowner.gf?n=200312151354062 |url-status = dead }} Additional center irrigation farmland is passed before giving way to more traditional farmland outside of the city of Tremonton, where a trumpet interchange marks where I-15 turns north towards Malad City and Pocatello.{{cite map |author = Utah Department of Transportation |title = Box Elder County |url = http://www.udot.utah.gov/main/uconowner.gf?n=200312151354322 |access-date = December 27, 2013 |year = 2005 |series = General Highway Map |page = 7 |scale = 1:29,040 |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = December 27, 2013 |archive-url = https://web.archive.org/web/20131227214757/http://www.udot.utah.gov/main/uconowner.gf?n=200312151354322 |url-status = dead }} Heading southeast from this interchange, I-84 and I-15 are concurrent for just over {{convert|38|mi|km}}.
=Concurrency with I-15=
File:Westbound I-84 approaching 31st St.jpg
Concurrent highways I-15/I-84 continue south, parallel to rail belonging to the Union Pacific Railroad past the Wellsville Mountain Wilderness, to an interchange at 1100 West in Brigham City, also known as US-91, which, once in Brigham City, becomes concurrent with US-89 and the two highways travel northeast from Brigham City into Box Elder Canyon toward Logan in the heart of the Cache Valley. US-89 closely parallels I-15/I-84 east, as the highways pass Willard Bay, Willard Bay State Park, and Bear River Migratory Bird Refuge before crossing into Weber County.
Upon entering Weber County, the rail line that the highway has paralleled since Tremonton splits off eastward near Defense Depot Ogden, as the concurrent highways continue south past Farr West and Marriott-Slaterville before a Southern Pacific Railroad rail line, which traverses the Great Salt Lake on a causeway, crosses under the freeway. The city of Ogden is bypassed by the Interstates, with US-89 serving downtown. US-89 is accessible via interchanges with SR-39, SR-79, and SR-104 in addition to I-84 further southeast. I-84 splits from I-15 at the south end of Ogden-Hinckley Airport, with I-15 continuing south toward Salt Lake City and Provo.{{cite map |author = Utah Department of Transportation |title = Weber County |url = http://www.udot.utah.gov/main/uconowner.gf?n=200402051619362 |access-date = December 27, 2013 |year = 2005 |series = General Highway Map |page = 1 |scale = 1:22,440 |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = December 28, 2013 |archive-url = https://web.archive.org/web/20131228015905/http://www.udot.utah.gov/main/uconowner.gf?n=200402051619362 |url-status = dead }}
=Eastern segment=
File:Thousand Mile Tree 2010.jpg]]
Splitting from I-15 near Roy, I-84 passes between Hill Air Force Base, which is to the south of the highway, and Washington Terrace before clipping the extreme northern portions of Davis County. While in Davis County, I-84 intersects 475 East, also known as the Adams Avenue Parkway, before coming to a hybrid partial cloverleaf/half diamond interchange with US-89 along the Davis–Weber county line.{{cite map |author = Utah Department of Transportation |title = Davis County |url = http://www.udot.utah.gov/main/uconowner.gf?n=200402051613442 |access-date = December 27, 2013 |year = 2005 |series = General Highway Map |scale = 1:22,440 |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = October 23, 2013 |archive-url = https://web.archive.org/web/20131023002326/http://www.udot.utah.gov/main/uconowner.gf?n=200402051613442 |url-status = dead }}
I-84 follows the Weber River into Weber Canyon, Morgan County, and Wasatch–Cache National Forest. Once in the canyon, the carriageways of the highway split to accommodate the Devil's Gate-Weber Hydroelectric Power Plant. Following the river south, I-84 exits the forest and enters the county seat of Morgan. Leaving the city the highway turns back east,{{cite map |author = Utah Department of Transportation |title = Morgan County |url = http://www.udot.utah.gov/main/uconowner.gf?n=200308261712322 |access-date = December 27, 2013 |year = 2005 |series = General Highway Map |scale = 1:29,040 |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = October 23, 2013 |archive-url = https://web.archive.org/web/20131023024020/http://www.udot.utah.gov/main/uconowner.gf?n=200308261712322 |url-status = dead }} passing Devil's Slide, an unusual rock formation just off the freeway.{{cite book |last = Powell |first = Allan Kent |title = The Utah Guide |url = https://books.google.com/books?id=9DXvlxmmL8MC&pg=PT84 |access-date = December 27, 2013 |edition = 3rd |year = 2003 |publisher = Fulcrum Publishing |location = Golden, Colo. |isbn = 9781555911140 |page = 84 }}
Upon entering Summit County, I-84 passes Thousand Mile Tree, planted by Union Pacific Railroad workers to mark the construction of {{convert|1000|mi|km}} of rail from its origin in Omaha, Nebraska.{{cite book |last = Leng |first = Sir John |title = America in 1876: Pencillings During a Tour |url = https://archive.org/details/cu31924023242120 |access-date = December 28, 2013 |year = 1877 |publisher = Dundee Advertiser Office |location = Dundee, Scotland |page = [https://archive.org/details/cu31924023242120/page/n112 109] |oclc = 1658991 }}{{cite web |url = http://library.usu.edu/Specol/photoarchive/p0019/p00190019.html |title = Sun Pictures of Rocky Mountain Scenery, Photographic Collection |last1 = Hayden |first1 = F.V. |last2 = Davis |first2 = Daniel M. |access-date = January 6, 2007 |publisher = Utah State University Special Collections and Archives |url-status = dead |archive-url = https://web.archive.org/web/20070112214258/http://library.usu.edu/Specol/photoarchive/p0019/p00190019.html |archive-date = January 12, 2007 |df = mdy-all }} The tree was said to be the only pine tree between Omaha and Salt Lake City.{{cite journal |last = Wilcox |first = H. K. W. |year = 1870 |title = Famous Trees |journal = Appleton's Journal of Literature, Science, and Art |publisher = D. Appleton & Company |page = 675 |oclc = 8241845 |url = https://books.google.com/books?id=Tal9AAAAMAAJ&pg=PA675 |access-date = December 27, 2013 }} Another tree was planted as the original tree had died in 1900 and was removed in 1926 to during the conversion from single-track to double-track through the canyon.{{cite web |url = http://www.morganhistoricalsociety.com/sites.htm |title = Historic Sites |last = Morgan County Historical Society |publisher = Morgan County Historical Society |date = 2007 |access-date = December 27, 2013 |archive-date = December 28, 2013 |archive-url = https://web.archive.org/web/20131228120209/http://www.morganhistoricalsociety.com/sites.htm |url-status = dead }}{{cite book |last = Smith |first = Linda H. |title = A History of Morgan County |url = http://utah.ptfs.com/Data/Library2/publications/dc019582.pdf |access-date = December 27, 2013 |series = Utah Centennial County History |year = 1999 |publisher = Utah State Historical Society |location = Salt Lake City |isbn = 978-0913738368 |page = 260 |archive-date = December 28, 2013 |archive-url = https://web.archive.org/web/20131228032451/http://utah.ptfs.com/Data/Library2/publications/dc019582.pdf |url-status = dead }} Past the tree, the freeway passes through the town of Henefer before terminating at a directional T interchange with I-80 just south of the census-designated place of Echo. Immediately south of the interchange is Echo Reservoir and Echo Dam.{{cite map |author = Utah Department of Transportation |title = Summit County |url = http://www.udot.utah.gov/main/uconowner.gf?n=200308261215512 |access-date = December 27, 2013 |year = 2005 |series = General Highway Map |page = 3 |scale = 1:22,440 |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = October 23, 2013 |archive-url = https://web.archive.org/web/20131023044424/http://www.udot.utah.gov/main/uconowner.gf?n=200308261215512 |url-status = dead }}
History
=Earlier roads=
Most of the original routing of what is now I-84 existed as early as 1923; however, the portion of now I-84 into Idaho was not yet constructed.{{cite map |publisher = Lincoln Highway Association |title = Map of Strategic Routes between Salt Lake City, Utah and California |url = http://contentdm.library.unr.edu/u?%2Fhmaps%2C1909 |access-date = December 27, 2013 |year = 1923 |author = Matthews-Northrup Works |scale = 1:2,500,000 |oclc = 36006905 |archive-date = December 26, 2013 |archive-url = https://archive.today/20131226212700/http://contentdm.library.unr.edu/u?/hmaps,1909 |url-status = dead }} In 1926, much of the route was signed as US-30S, from the now eastern terminus at I-80 (US-530 then), northwest into Ogden. Between Ogden and Brigham City, the highway was to be concurrent with US-91, then US-30S split off northwest to the Idaho border.{{cite map |author1= Bureau of Public Roads |author-link= Bureau of Public Roads |author2= American Association of State Highway Officials |author2-link= American Association of State Highway Officials |date= November 11, 1926 |title= United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials |url= https://commons.wikimedia.org/wiki/File:United_States_System_of_Highways_Adopted_for_Uniform_Marking_by_the_American_Association_of_State_Highway_Officials.jpg |scale= 1:7,000,000 |location= Washington, DC |publisher= U.S. Geological Survey |oclc= 32889555 |access-date= November 7, 2013 |via= Wikimedia Commons |name-list-style= amp}} The entire western branch of US-30S was an unimproved road; however, the concurrency into Ogden was paved. The remainder of the route to its now terminus was mostly graded with a few improved sections,{{cite map |author = Rand McNally |author-link = Rand McNally |map-url = http://broermapsonline.org/online/NorthAmerica/UnitedStates/NorthernRockies/Utah/unitedstates1926ra_064.html |map = Utah (northern) |title = Rand McNally Junior Road Map |year = 1926 |scale = 1:237,600 |location = Chicago |publisher = Rand McNally |oclc = 39724225 |access-date = December 27, 2013 }} and, by 1937, the entire route was paved.{{cite map |author = Texaco |author-link = Texaco |title = Texaco Road Map Idaho, Montana, Wyoming |url = http://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~23818~920003:Texaco-road-map-Idaho,-Montana,-Wyo |year = 1937 |author2 = Rand McNally |scale = 1:1,774,080 |location = Chicago |publisher =Rand McNally |sections = L5–M7 |access-date = December 26, 2013 |oclc = 52950564 }}
=Current road=
The first Utah state route to have the number 84 is what is now known as SR-126. SR-126 was originally numbered SR-84 until the 1977 Utah state route renumbering. Previously, the freeway's legislative designation was SR-3.{{cite web |author = Utah Department of Transportation |url = http://www.udot.utah.gov/main/uconowner.gf?n=200609181109591 |title = Route 84 |date = November 2007 |work = Highway Resolutions |publisher = Utah Department of Transportation |access-date = September 21, 2008 |archive-date = September 22, 2008 |archive-url = https://web.archive.org/web/20080922212302/http://www.udot.utah.gov/main/uconowner.gf?n=200609181109591 |url-status = dead }} Like the other two main Interstate Highways in Utah, I-15 (Veterans Memorial Highway) and I-80 (Purple Heart Trail), I-84 has also been given a special name of "Vietnam Veterans Memorial Highway". House Bill HB275, sponsored by Utah Representative Justin Fawson, North Ogden, authorizing the name designation was signed into law by Utah Governor Gary Herbert on March 30, 2015.{{Cite web |title=HB0275 |url=https://le.utah.gov/~2015/bills/static/HB0275.html |access-date=2022-08-07 |website=le.utah.gov}}{{cite map |author = Utah Department of Transportation |url = http://www.udot.utah.gov/main/uconowner.gf?n=4867309020033476 |title = Utah's Special Highways |access-date = December 28, 2013 |scale = Not to scale |location = Salt Lake City |publisher = Utah Department of Transportation |archive-date = January 9, 2013 |archive-url = https://web.archive.org/web/20130109161124/http://www.udot.utah.gov/main/uconowner.gf?n=4867309020033476 |url-status = dead }} The highway loosely follows the path of the first transcontinental railroad.{{cite book |last = United States Congress |author-link = United States Congress |title = Congressional Record |url = https://books.google.com/books?id=oraBSEWusJ4C |access-date = December 27, 2013 |volume = 115, Part 2 |year = 1969 |publisher = Government Printing Office |page = 29631 }} The original routing of US-30S had the highway passing into Idaho west of Black Pine Peak; however,{{cite map |author1 = Shell Oil Company |author-link = Shell Oil Company |title = Highway Map of Utah |url = http://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~212154~5500254:Shell-Map-of-Utah--cover-title---Sh?sort=Pub_List_No_InitialSort%2CPub_Date%2CPub_List_No%2CSeries_No&qvq=q:utah%2B1950;sort:Pub_List_No_InitialSort%2CPub_Date%2CPub_List_No%2CSeries_No;lc:RUMSEY~8~1&mi=1&trs=3 |access-date = December 26, 2013 |author2 = H.M. Gousha Company |author2-link = H.M. Gousha Company |scale = 1:1,203,840 |section = C2 }} the new I-84 was constructed to the east. The original roadways are now numbered SR-30, SR-42 and Idaho State Highway 2847.{{cite map |author = Idaho Transportation Department |author-link = Idaho Transportation Department |title = Idaho Official State Highway Map |url = http://www.visitidaho.org/assets/docs/Idaho_Highway_Map_onscreen.pdf |scale = Scale not given |location = Boise |publisher = Idaho Transportation Department |access-date = December 26, 2013 |sections = M5–M6 }}
{{Infobox road small
|state=UT
|type=I 1957
|route=80N
|location=Idaho state line to Echo
|formed=1958
|deleted=1977
}}
Passage of the Federal-Aid Highway Act of 1956 formed the Interstate Highway System;{{cite book |last = Lewis |first = Tom |year = 1997 |title = Divided Highways: Building the Interstate Highways, Transforming American Life |location = New York |publisher = Viking |pages = [https://archive.org/details/dividedhighwaysb00lewi/page/120 120–1, 136–7] |isbn = 0-670-86627-X |url-access = registration |url = https://archive.org/details/dividedhighwaysb00lewi/page/120 }} however, only the western segment of now I-84 was approved at this time, and a designation of I-82S was assigned to a then unconstructed controlled-access highway across Box Elder County in 1957.{{cite map |author = Public Roads Administration |title = Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials |url = http://www.ajfroggie.com/roads/yellowbook/numbering-1957.jpg |access-date = December 26, 2013 |date = August 14, 1957 |location = Washington, DC |publisher = Public Roads Administration |scale = Scale not given }} The eastern segment of the highway was added later in 1957,{{cite map |author = Public Roads Administration |title = Routes to be Added to the National System of Interstate and Defense Highways |url = http://www.ajfroggie.com/roads/yellowbook/additions-1957.jpg |access-date = December 27, 2013 |date = October 17, 1957 |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration }} and the route was numbered I-80N by 1958.{{cite map |author = Public Roads Administration |title = Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials |url = http://www.ajfroggie.com/roads/yellowbook/numbering-1958.jpg |scale = Scale not given |location = Washington, DC |publisher = Public Roads Administration |access-date = December 27, 2013 |date = June 27, 1958 }} By 1968, portions of the western half of the freeway had been completed, along with the segment between Tremonton and Brigham City. A portion of the freeway was completed around Morgan as well.{{cite map |author = Union Oil Company of California |author-link = Union Oil Company of California |title = Western United States |year = 1968 |author2 = Rand McNally & Co. |scale = 1:3,104,640 |sections = H7–H8 }} By 1971, most of the western portions of the freeway had been constructed with two sections remaining that had at-grade intersections. Along the concurrency, there were gaps between Brigham City and Pleasant View and one small gap near the Devil's Slide.{{cite map |author = State Road Commission of Utah |title = Utah Official Highway Map |year = 1971 |author2 = Rand McNally |scale = 1:1,102,464 |location = Salt Lake City |publisher = State Road Commission of Utah |sections= B4-C5 }}
The I-80N designation was changed to I-84 in 1977 by the AASHTO, over objections from the Washington State Department of Transportation and the Idaho Transportation Department, and with the support of UDOT and the Oregon Department of Transportation.{{cite news |date = August 13, 1977 |work = Deseret News |location = Salt Lake City |pages = A3 |title = Interstate 80 to become 84 |oclc = 367900151 }} By 1978, construction of I-84 was complete across most of the three states.{{cite news |title = Other Projects Get $5 Billion in Interstate Road 'Trades': Fewer Than 11,000 Miles Complete |date = December 3, 1978 |work = The New York Times |oclc = 1645522 |id = {{ProQuest|123565578}}}} In September 1986, the final section of the highway was opened on the {{convert|11|mi|km}} from Tremonton to Blue Creek Summit, following three years of construction that cost $21 million (equivalent to ${{Formatprice|{{inflation|US-GDP|21000000|1986}}}} in {{Inflation/year|index=US-GDP}}{{Inflation/fn|index=US-GDP}}).{{cite news |date = September 21, 1986 |title = UDOT completes highway |page = 2 |work = The Spectrum |location = St. George, Utah |agency = UPI |url = https://www.newspapers.com/clip/21197291/final_section_of_i84_in_utah/ |via = Newspapers.com |access-date = June 22, 2018 }} {{free access}}
In 1994, I-84 was planned to be used to transport low-level radioactive waste from Idaho National Laboratory to the Waste Isolation Pilot Plant in Carlsbad, New Mexico, via Wyoming.{{cite news |title = N-Waste shipments to Pass Through N. Utah in 1994 |date = September 1, 1993 |work = The Salt Lake Tribune |page = C3 |oclc = 8086936 |agency = Associated Press |id = {{ProQuest|288598169}}}} This did not start until 1999 however due to the delay in the opening of the New Mexican plant.{{cite news |title = Judge's Ruling May Open Path Through Utah for Nuke Waste |date = March 23, 1999 |work = The Salt Lake Tribune |page = A8 |agency = Associated Press |oclc = 8086936 |id = {{ProQuest|288903298}}}} A $20-million (equivalent to ${{formatprice|{{inflation|US-GDP|20000000|1998}}}} in {{inflation-year|US-GDP}}{{inflation-fn|index=US-GDP}}) reconstruction of the US-89 interchange at the mouth of Weber Canyon was financed partly by the funding obtained by the state in preparation for the 2002 Winter Olympics in 1998{{cite news |title = Fed Funds Pave Way For Roads; Most of $90M transportation grant will go to Olympic highway work; Grant Provides $75M for Olympic Roads |last = Gorrell |first = Mike |date = October 28, 1998 |work = The Salt Lake Tribune |page = A1 |oclc = 8086936 |id = {{ProQuest|288847913}}}} and was scheduled to begin in 2000.{{cite news |title = As Feds Divvy Up Last of Highway Funds, SLOC Holds Breath |last = Gorrell |first = Mike |date = October 19, 1999 |work = The Salt Lake Tribune |page = B2 |oclc = 8086936 |id = {{ProQuest|288909759}}}} Reconstruction of a {{convert|10|mi|km|adj=mid|-long}} segment of I-84 between Mountain Green and Morgan was done between 2004 and 2005 at a cost of $19 million (equivalent to ${{formatprice|{{inflation|US-GDP|19000000|2004}}}} in {{inflation-year|US-GDP}}{{inflation-fn|index=US-GDP}}).{{cite press release |title = Granite Construction Awarded $19.0 Million Highway Reconstruction Project in Utah |agency = PR Newswire |date = December 22, 2003 |oclc = 44297296 |id = {{ProQuest|448224430}} }} One of the sub-contractors on the job was found guilty of lying about sub-par work done on installation of roadside impact absorbers along this stretch.{{cite news |title = Orem construction company admits lying |last = Manson |first = Pamela |date = July 8, 2009 |work = The Salt Lake Tribune |oclc = 8086936 |id = {{ProQuest|280593335}}}}
Exit list
{{UTint|exit|county=Box Elder|cspan=13|location=none|mile=0.000|road={{jct|state=ID|I|84|dir1=west|city1=Boise}}|notes=Continuation into Idaho}}
{{UTint|exit
|location=none
|mile=4.660
|exit=5
|road={{jct|state=UT|SR|30|dir1=west|city1=Park Valley}}
|type=concur
|notes=West end of SR-30 overlap; former US-30S
}}
{{UTint|exit
|location=Snowville
|mile=7.125
|exit=7
|road=Snowville
}}
{{UTint|exit
|location=none
|mile=11.978
|exit=12
|road=Ranch Exit
}}
{{UTint|exit
|location=none
|mile=15.808
|exit=16
|road=Hansel Valley
}}
{{UTint|exit
|location=none
|mile=17.385
|exit=17
|road=Rattlesnake Pass
}}
{{UTint|exit
|location=none
|mile=20.317
|exit=20
|road=Blue Creek
}}
{{UTint|exit
|location=none
|mile=24.457
|exit=24
|road=Pocatello Valley
}}
{{UTint|exit
|location=Howell
|mile=26.567
|exit=26
|road={{jct|state=UT|SR|83|dir1=south|city1=Howell|location2=ATK}}
|notes=Access to Golden Spike National Historic Site
}}
{{UTint|exit
|location=none
|mile=32.414
|exit=32
|road=Whites Valley Road
|notes=Formerly signed as "Ranch Exit"
}}
{{UTint|exit
|location=none
|mile=39.508
|exit=39
}}
{{UTint|exit
|location=Bothwell Junction
|mile=40.824
|exit=40
|road={{jct|state=UT|SR|102|city1=Tremonton|city2=Bothwell}}
}}
{{UTint|exit
|location=none
|type=concur
|mile=42.012
|exit=41
|road={{jct|state=UT|I|15|dir1=north|location1=Pocatello}}
|notes=West end of I-15 overlap; signed as exit 379 westbound
}}
{{jctgap|text=I-84 overlaps Interstate 15 for {{convert|38.309|mi|km|abbr=on}}
}}
{{UTint|exit
|county=Weber
|cspan=2
|location=Riverdale
|lspan=2
|type=concur
|mile=81.043
|exit=
|road={{jct|state=UT|I|15|dir1=south|city1=Salt Lake City}}
|notes=East end of I-15 overlap; I-15 exit 340; westbound access via exit 81
}}
{{UTint|exit
|mile=81.727
|exit=81
|road={{jct|state=UT|SR|26|to2=to|I|15|dir2=south|name1=Riverdale Road|city1=Riverdale}}
}}
{{UTint|exit
|county=Davis
|location=Uintah
|mile=84.594
|exit=85
|road=Adams Avenue
|notes=Adams Avenue is a private toll road here
}}
{{UTint|exit
|county=Weber
|location=Uintah Junction
|mile=87.771
|exit=87
|road={{jct|state=UT|US|89|city1=South Ogden|city2=Salt Lake City|city3=Ogden}}
|notes=Signed as exits 87A (south) and 87B (north) westbound
}}
{{UTint|exit
|county=Morgan
|cspan=9
|location=none
|mile=91.240
|exit=
|place=Rest area (eastbound)
|type=incomplete}}
{{UTint|exit
|type=incomplete
|location=none
|mile=92.339
|exit=92
|road={{jct|state=UT|SR|167|dir1=north|city1=Mountain Green|city2=Huntsville}}
|notes=Eastbound exit and westbound entrance
}}
{{UTint|exit
|location=none
|mile=93.904
|exit=
|place=Rest area (westbound)
|type=incomplete}}
{{UTint|exit|
|location=none
|mile=96.504
|exit=96
}}
{{UTint|exit
|location=Morgan
|mile=103.333
|exit=103
|road={{jct|state=UT|SR|66|city1=Morgan}}
}}
{{UTint|exit
|location=none
|mile=106.173
|exit=106
|road=Rees Lane
|notes=Formerly signed as "Ranch Exit"
}}
{{UTint|exit
|location=none
|mile=108.272
|exit=108
|road=Taggart
}}
{{UTint|exit
|location=none
|mile=111.313
|exit=111
|road=Croydon
|notes=Former SR-158
}}
{{UTint|exit
|location=none
|mile=110.761
|exit=
|place=Devil's Slide View Area}}
{{UTint|exit
|county=Summit
|cspan=3
|location=none
|mile=112.739
|exit=112
|road={{jct|state=UT|SR|86|dir1=east|city1=Henefer}}
}}
{{UTint|exit
|location=Henefer
|mile=115.399
|exit=115
|road={{jct|state=UT|SR|65|dir1=south|city1=Henefer|city2=Echo}}
}}
{{UTint|exit
|location=none
|mile=119.773
|exit=120
|road={{jct|state=UT|I|80|name1={{jct|state=UT|US|189|noshield=yes}}|city1=Salt Lake City|location2=Cheyenne}}
|notes=I-80 exit 168; signed as exits 120A (east) and 120B (west); eastern terminus; semi-directional T interchange
}}
{{jctbtm|exit|keys=concur,incomplete}}
See also
- {{Portal-inline|U.S. Roads}}
- {{Portal-inline|Utah}}
References
{{Reflist|30em}}
External links
{{AttachedKML|display=title,inline}}
- {{Commons category-inline}}
- [http://www.aaroads.com/west/i-084_ut.html Interstate 84 in Utah] on AARoads
{{State detail page browse|type=I|route=84|dab=Oregon–Utah|state=Utah|statebefore=Idaho}}
{{Good article}}
{{DEFAULTSORT:Interstate 84 In Utah}}
Category:Transportation in Box Elder County, Utah
Category:Transportation in Weber County, Utah
Category:Transportation in Davis County, Utah
Category:Transportation in Morgan County, Utah
Category:Transportation in Summit County, Utah