This beautiful truss bridge is similar in design and construction date to the nearby Calumet Sag Channel Bridge. Although the listed total length of this bridge is longer than the Cal-Sag bridge, that is only because it doesn't have as many approach spans. This structure's main span, the through truss span, is actually smaller than the Cal-Sag bridge. As a result the design is not as elaborate. The bridge's truss configuration is a Parker truss, which is like the Pennsylvania truss configuration seen on the Calumet Sag Channel, but the extra subdivision web members are absent, and only the base Pratt diagonals are present. The bracing is extensive in this bridge, but not as much as the Calumet Sag Channel. In particular, the portal bracing is much less massive.
As of 2013, it appears this bridge has been scheduled for a repainting project. The areas in the "splash zone" around the roadway that take the most moisture and salt will be repainted. This is a good, cost-effective project that prioritizes repairing the areas of the paint system that need it most and deteriorate first.
Complete Bridge List
Chicago and Cook County are home to one of the largest collections of historic bridges in the country, and no other city in the world has more movable bridges. HistoricBridges.org is proud to offer the most extensive coverage of historic Chicago bridges on the Internet.
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.
Additional Online Articles and Resources - This page is a large gathering of interesting articles and resources that HistoricBridges.org has uncovered during research, but which were not specific to a particular bridge listing.
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