St. Charles Air Line Bridge
|St. Charles Air Line Bridge|
St. Charles Air Line Bridge with an upright B&OCT Bascule Bridge just behind
|Carries||2 tracks of the Canadian National Railway|
|Crosses||Chicago River (south branch)|
|Official name||St. Charles Air Line Bridge|
|Maintained by||Canadian National Railway|
|Design||Strauss Trunnion bascule lift span|
|Longest span||Originally 260 feet (79 m), later shortened to 220 feet (67 m) in 1930|
Built as part of the St. Charles Air Line Railroad by the American Bridge Company in 1919, the bridge originally had a span of 260 feet (79 m). This bridge held the world record for longest bascule-type span until 1930, when it was shortened to 220 feet (67 m) during a relocation as a result of straightening the river channel. The chief design engineer of the original bridge was Leonard O. Hopkins.
- The adjacent B&OCT Bascule Bridge, with more information about the history of both bridges
- List of bridges documented by the Historic American Engineering Record in Illinois
- "Counterweight Repair of Historic St. Charles Air Line Bridge" (PDF). Concrete Repair Bulletin. 28 (6): 9–13. November 2015.
- Historic American Engineering Record (HAER) No. IL-157, "St. Charles Air Line Bridge"
- Historic Bridges of Michigan and Elsewhere
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