This bridge is an example of an older Calumet Sag Channel through truss. As an older bridge it uses only rivets and no bolts, and also uses v-lacing and lattice extensively on its built-up beams. These aspects give the bridge a superior geometric beauty to the many later truss bridges crossing the waterway. This bridge carries heavy traffic but remains in good condition overall. It appears that the piers were altered with supplemental supports that extend behind the piers, perhaps to prevent the piers from rotating into the channel over time. The approach spans have been replaced with pre-stressed stringer spans. The through truss span retains good historic integrity however.
Main PlaqueSTATION 297 - 50
BUILT 1932 BY
STATE OF ILLINOIS
BOND ISSUE ROUTE 49
SECTION 146 - B2
Rehabilitation PlaqueSTATION 1+000.000
REBUILT 1997 BY
STATE OF ILLINOIS
F.A.U. RT. 2857 SEC. 146 (B&C) 2 R-1
F.A. PROJ. ACDPU-DPU-STPM-0016(3)
STR. NO. 016-0294
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Chicago Loop Bridges - Chicago Loop Bridges is another website on the Internet that is a great companion to the HistoricBridges.org coverage of the 18 movable bridges within the Chicago Loop. This website includes additional information such as connections to popular culture, overview discussions and essays about Chicago's movable bridges, additional videos, and current news and events relating to the bridges.
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