St. Louis-San Francisco Overpass

36°12′21″N 91°10′19″W / 36.20583°N 91.17194°W / 36.20583; -91.17194Carries US 62 / AR 115CrossesSpring RiverLocaleImboden, ArkansasOfficial nameSt. Louis-San Francisco OverpassMaintained byArkansas Department of TransportationID numberAHTD 1984CharacteristicsDesignConcrete deck girder approach spans (both sides); three riveted, 11-panel Pratt deck trusses; three riveted, 11-panel Parker pony trussesTotal length1,049.9 feet (320.0 m)Width2 lanes, 23.9 feet (7.3 m)Longest span112 feet (34 m)HistoryOpened1937 Nearest cityImboden, ArkansasAreaLawrence CountyBuilt1937ArchitectC. F. LytleMPSHistoric Bridges of ArkansasNRHP reference No.90000513^[1]Added to NRHPApril 9, 1990 StatisticsDaily traffic2,800Location

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 and the former St. Louis-San Francisco Railroad ("Frisco", now BNSF) 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 (34 m) long, with the balance of the bridge length in steel girder truss spans. The bridge is 24 feet (7.3 m) wide.^[3]

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.

• List of bridges documented by the Historic American Engineering Record in Arkansas
• List of bridges on the National Register of Historic Places in Arkansas
• National Register of Historic Places listings in Lawrence County, Arkansas

Media related to Frisco Spring River Bridge at Wikimedia Commons

• Historic American Engineering Record (HAER) No. AR-26, "St. Louis-San Francisco Bridge, Spanning Spring River at U.S. Highway 62, Imboden, Lawrence County, AR", 9 photos, 15 data pages, 1 photo caption page