St. Louis-San Francisco Overpass

The St. Louis-San Francisco Overpass is a pony and deck truss bridge built in 1937 located in Imboden, Lawrence County, Arkansas. It carries U.S. Route 62 and Arkansas Highway 115 over the Spring River for 1,049.9 feet (320.0 m).[2] The bridge has three Pratt deck trusses, each 112 feet (34 m) in length, and three Parker pony trusses, also 112 feet long, with the balance of the bridge length in steel girder truss spans. The bridge is 24 feet (7.3 m) wide.[3]

Imboden Bridge
St. Louis - San Francisco Bridge
Coordinates36°12′21″N 91°10′19″W
Carries US 62 / AR 115
CrossesSpring River
LocaleImboden, Arkansas
Official nameSt. Louis-San Francisco Overpass
Maintained byArkansas State Highway and Transportation Department
ID numberAHTD 1984
Characteristics
DesignConcrete deck girder approach spans (both sides), Three riveted, 11-panel Pratt deck trusses, Three riveted, 11-panel Parker pony trusses,
Total length1,049.9 feet (320.0 m)
Width2 lanes, 23.9 feet (7.3 m)
Longest span112 feet (34 m)
History
Opened1937
St. Louis-San Francisco Overpass
Invalid designation
Location in Arkansas
Location in United States
Nearest cityImboden, Arkansas
AreaLawrence County
Built1937
ArchitectC.F. Lytle
MPSHistoric Bridges of Arkansas
NRHP reference No.90000513[1]
Added to NRHPApril 9, 1990
Statistics
Daily traffic2,800
Location

The bridge was listed on the National Register of Historic Places in 1990.[1] The bridge is currently open to two-lane traffic. It has a separate pedestrian sidewalk.

See also

References
  1. "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
  2. "Imboden Bridge." Bridge Profile. Retrieved June 14, 2010.
  3. "NRHP nomination for St. Louis-San Francisco Overpass" (PDF). Arkansas Preservation. Retrieved 2014-12-27.


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