Canal Street railroad bridge

The Canal Street railroad bridge is a vertical-lift bridge across the south branch of the Chicago River in Chicago, Illinois. It was designated a Chicago Landmark on December 12, 2007.
The present bridge was constructed for the Pennsylvania Railroad to replace a two-track swing bridge at the same location. The necessity to allow both continued use of the swing bridge and unimpeded river traffic during building work complicated construction of the bridge. The chosen solution was to construct the bridge in the raised position above the old bridge, then demolish the old bridge once construction was completed. The bridge was designed by Waddell & Harrington, and fabricated and erected by the Pennsylvania Steel Company.

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