This bridge is of riveted, construction in general, but some connections, such as the overhead lateral bracing to the top chord, are bolted. Assuming this is an original detail it appears the portions of the bridge assembled in a shop were riveted, with all field connections being made using bolts. A Bethlehem Steel brand is visible on some of the steel indicating that at least some of the steel was rolled by that company. The truss spans are physically connected to each other (note the inclined end posts at the end, but the vertical posts that are connected over the piers. This visually suggests the bridge is continuous (rather than simple spans). However the bridge may not "function" as a continuous truss in an engineering sense.
This bridge is perhaps not the most attractive truss bridge, but it offers more detail than the later bridges of this style which would be welded. Instead, this bridge offers a look at how pedestrian overpasses were designed in a period where hot metal riveting was still in use. The majority of this bridge's beams are riveted angles.
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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.
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.
This bridge is tagged with the following special condition(s): Footbridge
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