Double decker

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"I" Street Bridge (Yolo County, California)
Built 1911
Swing bridge over Sacramento River, carries railroad tracks and "I" Street in West Sacramento
Open to traffic

Androscoggin River Railroad Bridge (Cumberland County, Maine)
Built 1909; rehabilitated 1987
Through truss bridge over Androscoggin River on MCRR in Brunswick
Open to traffic

Arsenal Bridge (Scott County, Iowa)
Built 1896, Rehabilitated 1983 & 1997
Baltimore through truss bridge over Mississippi River on 2 lanes of traffic and a single rail line in Davenport
Open to traffic

ASB Bridge (Jackson County, Missouri)
Opened to traffic on December 28, 1911; upper roadway deck removed 1987
Vertical-lift through truss bridge over the Missouri River on the BNSF Railway in Kansas City
Open to railroad traffic

Brent Spence Bridge (Hamilton County, Ohio)
Built 1963
Double-decker cantilevered through truss bridge over the Ohio River on I-71/I-75 at Cincinnati
Open to traffic

Central Avenue Bridge (Wyandotte County, Kansas)
Built 1918; rehabilitated 1983 and 2008
Two-level deck truss bridge over Kansas River on Central Avenue in Kansas City
Open to traffic

Eads Bridge (St. Louis, Missouri)
Built 1869-1874 under the direction of engineer James Buchanan Eads; automobile deck closed 1989 - 2003 for rehabilitation and replacement; reopened July 4, 2003
Three-span steel arch bridge over the Mississippi River in downtown St. Louis
Top deck open to four lanes of traffic with a pedestrian lane, bottom deck open to two tracks of MetroLink light rail service

Fort Madison Bridge (Lee County, Iowa)
Built 1927
Toll double-decker through truss swing bridge over the Mississippi River on IA 2/IL 9/BNSF Railroad at Fort Madison
Open to traffic

Foxburg Bridge (Armstrong County, Pennsylvania)
Built 1921; rehabilitated 1981/1985; demolished July 24, 2008
Lost through truss bridge over Allegheny River on PA 58 in Foxburg
Replaced by a new bridge

Fremont Bridge (Multnomah County, Oregon)
Built 1973
Steel through arch bridge over Willamette River on I-405 in Portland
Open to traffic

Highline Bridge (Wyandotte County, Kansas)
Built 1917; rehabilitated 2005
Two-level through truss bridge and network of approaches over Kansas River on the KCTRR in Kansas City
Open to traffic

I-5 - Lake Washington Ship Canal Bridge (King County, Washington)
Built 1962
Deck truss bridge over Lake Washington Ship Canal on I-5 in Seattle
Open to traffic

I-5 - Marquam Bridge (Multnomah County, Oregon)
Built 1966, Seismic Retrofit 1996
Cantilevered Warren deck truss bridge over Willamette River on I-5 in Portland
Open to traffic

I-5 - Pit River Bridge (Shasta County, California)
Built 1941
Double deck, deck truss bridge over Shasta Lake (Pit River Arm) on I-5 & Union Pacific Railroad
Open to traffic

Intercity Viaduct (Wyandotte County, Kansas)
Completed in 1907; lower level added 1930; parallel span opened in 1962
Two-level deck truss bridge over Kansas River on I-70 Eastbound in Kansas City
Open to four lanes of traffic on upper level and pedestrian traffic on lower level

Lake Shore Drive Bridge (Cook County, Illinois)
Built 1937
Double-deck bascule bridge over Main Branch Chicago River on Lake Shore Drive in Chicago
Open to traffic

MacArthur Bridge (St. Louis, Missouri)
Built 1907-1917 by the City of St. Louis to break the monopoly of the Terminal Railroad Association, which controlled the two other bridges at St. Louis and charged unreasonable tolls. Automobile deck closed to traffic in 1981.
Three-span through truss bridge over the Mississippi River in St. Louis, south of the Poplar Street Bridge
Open to railroad traffic only

Meridian Bridge (Yankton County, South Dakota)
Built 1924; rehabilitated 1953; bypassed by Discovery Bridge in 2008
Vertical-lift through truss bridge over the Missouri River on US 81 at Yankton
Closed to traffic

Michigan Avenue Bridge (Cook County, Illinois)
Built 1920
Bascule bridge over Main Branch Chicago River on Michigan Avenue in Chicago
Open to traffic

Noble Avenue Bridge (Logan County, Oklahoma)
Built 1936
Double-deck steel stringer bridge over Cottonwood Creek and Railroad on S.H. 33 in Guthrie
Open to traffic

Oliver Swing Bridge (Douglas County, Wisconsin)
Built 1910
Double-decker swing bridge over St. Louis River on WI 105, BNSF Railway in Oliver
Open to traffic

Rock Island Bridge (Washington County, Minnesota)
Built 1894; closed to traffic in 1999; swing span plus all but two remaining spans demolished in May 2010; two remaining spans converted into pedestrian pier, which included the addition of truss spans on Dakota side in Nov. 2010, reopened in 2011
Abandoned through truss swing bridge over the Mississippi River at St. Paul Park
Closed to all traffic

Second Bridge (Scott County, Iowa)
Built 1872, Replaced 1895
Lost through truss bridge over Mississippi River on Railroad and Road
Replaced by a new bridge

Second Hannibal Bridge (Jackson County, Missouri)
Built 1917 to replace First Hannibal Bridge; auto deck abandoned 1956
Through truss swing bridge over Missouri River on the BNSF Railway in Kansas City
Open to railroad traffic

Sherman Minton Bridge (Jefferson County, Kentucky)
Built 1961; rehabilitated 1997 and 2011/12
Double Decker Two-span steel through arch bridge over Ohio River on I-64 between New Albany and Louisville in Louisville
Reopend on Feb 18th after being Closed by order of Gov. Mitch Daniels after inspections found crack in a load bearing portion of the structure.

Slade's Ferry Bridge (Bristol County, Massachusetts)
The Slades Ferry swing bridge on the Falls River branch was a double-decker affair with automobile traffic running inside the truss, and trains running atop. The bridge was destroyed when a passing ship attempted to navigate past the swing section an
Lost double-decker truss bridge over Taunton River
Removed

Steel Bridge (Multnomah County, Oregon)
Built 1912
Vertical-lift through truss bridge over Willamette River on OR 99W in Portland
Open to highway and light rail traffic on upper deck; bicycle/pedestrian and rail traffic on lower deck

Suncook Connector Bridge (Merrimack County, New Hampshire)
Built 2007
Deck truss bridge over Suncook River and Buck Street on US 3 in Suncook
Open to traffic

Tobin Bridge (Suffolk County, Massachusetts)
Built 1950
Through truss bridge over Mystic River on Northbound US 1 in Boston
Open to traffic

Twelfth Street Viaduct (Jackson County, Missouri)
Built 1913-14; rehabilitated 1965 and 2006
Concrete viaduct over the railroad tracks on Twelfth Street, just west of downtown Kansas City
Open to traffic

Wells Street Bridge (Cook County, Illinois)
Built 1922, rehabilitated 2013
Bascule bridge over Main Branch Chicago River on N. Wells Street in Chicago
Under major rehabilitation. Open to railroad traffic only. Closed to cars and pedestrians.

Western Hills Viaduct (Hamilton County, Ohio)
Built 1930-32 as part of the Union Terminal Project; eastern end rebuilt 1960-63 to accomodate I-75
Double-decker concrete viaduct with two open-spandrel arch spans over Mill Creek Valley in Cincinnati
Open to two decks of traffic