This bridge is among the older bridges on the Calumet Sag Channel and the Little Calumet River. However unlike the other older truss bridges on these waterways, this bridge uses only rolled beams for its truss vertical and diagonal members, which gives it a more simple appearance compared to some of the other bridges which make more extensive use of built-up beams with lattice and v-lacing. The bridge is nicely proportioned however and maintains an attractive appearance. This bridge appears to be in good physical condition.
An interesting discovery was a bridge plan sheet that outlined a plan to add lift towers to this bridge and make it a vertical lift bridge that would raise up a short distance. These towers, while drawn on the plans, were described as "lift tower not included in this contract" however it appears the bridge was designed with the potential to be turned into a vertical lift bridge if future requirements for clearance on the Calumet Sag Channel ever increased to something higher than this bridge initially provided. However, these lift towers were never constructed. The drawing below shows how these towers would have looked if built.
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General Chicago / Cook County Bridge Resources
Chicago's Bridges - By Nathan Holth, author of HistoricBridges.org, this book provides a discussion of the history of Chicago's movable bridges, and includes a virtual tour discussing all movable bridges remaining in Chicago today. Despite this broad coverage, the book is presented in a compact format that is easy to take with you and carry around for reference on a visit to Chicago. The book includes dozens of full color photos. Only $9.95 U.S! ($11.95 Canadian). Order Now Direct From The Publisher! or order on Amazon.
Chicago River Bridges - By Patrick T. McBriarty, this is a great companion to Holth's book shown above. This much larger book offers an extremely in-depth exploration of Chicago's movable highway bridges, including many crossings that have not existed for many years. Order Now Direct From The Publisher! or order on Amazon.
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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