Queensway Twin Bridges

{{Use mdy dates|date=April 2025}}

{{Use American English|date=January 2025}}

{{Infobox bridge

| name = Queensway Twin Bridges

| native_name =

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| image = The Midnight (4263740015).jpg

| image_size = 300px

| image_upright =

| alt =

| caption = Queensway Twin Bridges, lit at night

| coordinates = {{coord|33.759985|-118.199294|display=inline,title}}

| os_grid_reference =

| carries = Queens Way

| crosses = Los Angeles River / Queensway Bay

| locale = Long Beach, California

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| heritage =

| id = 53C-0551 L/R

| id_type = NBI

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| preceded =

| followed =

| design = Orthotropic deck steel box girder

| material = Steel

| material1 =

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| length = {{convert|1200|ft|abbr=on}} each
({{convert|5400|ft|abbr=on}} each, including approaches)

| width = {{convert|46|ft|abbr=on}} each

| height =

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| traversable =

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| mainspan = {{convert|500|ft|abbr=on}} each

| number_spans = 3 each

| piers_in_water = 4 total (2 per bridge)

| load =

| clearance_above =

| clearance_below = {{convert|45|ft|abbr=on}}

| lanes = 6 (3 on each bridge)

| life =

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| electrification =

| architect =

| designer = Martin A. Nishkian

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| engineering =

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| begin =

| complete = June 1970

| cost = 1966: {{US$|15500000|1966|round=-3}}

| open = October 5, 1970

| inaugurated =

| rebuilt =

| collapsed =

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}}

The Queensway Twin Bridges (sometimes Queens Way Bridges or Queensway Bay Bridge) connect downtown Long Beach with the outer Port of Long Beach. They are the southernmost crossing of the Los Angeles River, near the mouth of the river, where it empties into Queensway Bay, and they are the primary arterial link between Long Beach and RMS Queen Mary. The bridges were completed in June 1970{{cite book |chapter-url=https://books.google.com/books?id=XxYKgLVnT8YC&pg=SA14-PA14 |title=Bridge Engineering Handbook |author1=Mangus, Alfred R. |author2=Sun, Shawn |editor1=Chen, Wai-Fah |editor2=Duan, Lian |date=1999 |publisher=CRC Press |location=Boca Raton, Florida |access-date=1 January 2017 |page=14-14 |chapter=14: Orthotropic Deck Bridges |isbn=0-8493-7434-0 }} and opened on October 5, 1970.{{cite web |url=http://www.gazettes.com/opinion/another-view-family-honors-long-beach-bridge-designer/article_95d5a14c-8341-11e5-bdf9-5f052b9fb127.html |title=ANOTHER VIEW: Family Honors Long Beach Bridge Designer |author=Sieg, Sondra Nishkian |date=7 November 2015 |website=Gazettes |access-date=1 January 2017}}

History

During the planning and construction phase, the bridge was known as the Magnolia Avenue Bridge{{cite news |url=https://www.newspapers.com/newspage/17831679/ |title=Magnolia Span Plan Approved |author= |date=10 February 1967 |page=21 |newspaper=Long Beach Independent |access-date=1 January 2017}}{{subscription required}} or Magnolia Bridge.{{cite web |url=https://www.flickr.com/photos/disneywizard/4911091826 |title=1970 map, Shoreline and Pike Amusement Zone streets, Long Beach, CA |author=Dr. Disney Wizard |date=9 August 2010 |website=flickr |access-date=1 January 2017}} The consulting engineering firm headed by Martin A. Nishkian was retained to design the bridge.{{cite news |url=https://www.newspapers.com/newspage/161177088/ |title=Bridge Planned in Harbor Area |author= |date=16 October 1966 |newspaper=Los Angeles Times |access-date=1 January 2017}}{{subscription required}}

The Bridges were built relatively quickly. The superstructure was prefabricated offsite, shipped and partially assembled before being erected in 14 pieces over only 11 days.{{cite conference |url=http://www.orthotropic-bridge.org/pdffiles/CaliforniaOrthotropicBridgeBusTourOBC2008.pdf |title=The California Orthotropic Steel Bridges 1965–2004 |author=Mangus, Alfred R. |date=23–25 June 2004 |location=Millau|conference=Steelbridge 2004 |access-date=1 January 2017 |pages=53–54}} Murphy Pacific fabricated the complete superstructure in their Richmond, California yard and shipped it to Long Beach in 30 sections via barge.{{cite journal |url=http://www.abarsazeha.com/images/ScinteficResources/Steeltips/SSEC_TIP_98.pdf |title=Early California accelerated steel bridge construction |author=Murphy, Jay P. |date=June 2007 |publisher=Structural Steel Educational Council Technical Information & Product Service |journal=Steel TIPS |archive-url=https://web.archive.org/web/20160725204605/http://www.abarsazeha.com/images/ScinteficResources/Steeltips/SSEC_TIP_98.pdf |archive-date=25 July 2016 |url-status=live |access-date=1 January 2017}} Six segments were erected on the harbor side in late January 1970; the six mirror-image segments were erected on the Long Beach side in early May 1970; finally, the largest and heaviest {{convert|290|ft|adj=on}} long drop-in sections of the main spans were erected on 26 May 1970.

By 1972, the Bridges had taken on their present name.

In April 2010, seismic retrofits were started on ramps leading to the Bridges. The contractor abruptly abandoned work in November 2010,{{cite letter |url=https://www.documentcloud.org/documents/74682-report-on-queensway-bridge-in-long-beach |subject=Find contractor in default: Bridge Seismic Retrofit, Queensway southbound ramps J & K over Harbor Scenic Drive, City of Long Beach (Supervisoral District 4) |recipient=Board of Supervisors, County of Los Angeles |last=Department of Public Works, County of Los Angeles |access-date=1 January 2017 |date=1 March 2011}} with the contractor stating they had not been paid and the County of Los Angeles finding fault in the contractor's work to-date.{{cite news |url=https://www.latimes.com/archives/la-xpm-2011-mar-22-la-me-seismic-retrofit-queensway-sl-story.html |title=Seismic retrofit stalled on ramps to Queensway Bay Bridge in Long Beach |author=Lin II, Rong-Gong |date=22 March 2011 |newspaper=Los Angeles Times |access-date=1 January 2017 }}

Design

Each bridge carries an orthotropic deck atop steel box girders. Each bridge spans a total of {{convert|1200|ft|abbr=on}}, excluding approaches, as a three-span girder bridge, with a {{convert|500|ft|abbr=on}} main span flanked on each side by a {{convert|350|ft|abbr=on}} side span. Including the {{convert|1900|ft|abbr=on|adj=on}} south and {{convert|2300|ft|abbr=on|adj=on}} north approaches, the total length of each bridge is {{convert|5400|ft|abbr=on}}. The deck is coated with an epoxy asphalt wearing surface.{{cite web |url=http://www.chemcosystems.com/epoxy_info.html |title=Epoxy Asphalt: Detailed Information |author= |date=2013 |website=ChemCo Systems |access-date=1 January 2017 }}

The main span includes a central {{convert|290|ft|abbr=on}}, {{convert|617|ST|adj=on}} drop-in section which was lifted in place by the Marine Boss floating crane. The drop-in span is supported on each side by a {{convert|105|ft|abbr=on}} section cantilevered off the pier. The Bridges feature a {{convert|45|ft|abbr=on}} vertical clearance above the average low tide mark and provide three lanes of traffic in each direction with a {{convert|6|ft|abbr=on|adj=on}} wide sidewalk outboard of the traffic lanes. The cost of the bridge was estimated at {{US$|7391632|1967|round=-4}}, with the approach structures costing an additional {{US$|5882761|1967|round=-4}}.

The Bridges subsequently won an AISC Prize Bridge Award in 1971.

See also

References

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