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MacArthur Bridge

St. Louis Municipal Bridge

   


MacArthur Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: November 13, 2016
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Key Facts

Location
St. Louis and East St. Louis: St. Louis City, Missouri and St. Clair County, Illinois
Structure Type
Metal 18 Panel Pin-Connected Pennsylvania Through Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1917 By Builder/Contractor: American Bridge Company of New York, New York and Engineer/Design: Boller, Hodge, and Baird of New York, New York

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
668 Feet (203.6 Meters)
Structure Length
13300 Feet (4053.8 Meters)
Roadway Width
30 Feet (9.1 Meters)
Spans
3 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

View Missouri Historic Bridge Inventory Sheet For This Historic Bridge

View Historical News Article About Bridge

View Historical Book About Bridge

This bridge was originally built as a double-deck bridge with highway (on top) and railroad bridge (on bottom). Unfortunately, by the time this bridge was documented by HistoricBridges.org in 2016, a project to demolish nearly all of the long-abandoned highway deck was nearly completed, although some noteworthy highway portions remained on the approaches. Despite this loss, the remaining bridge is still one of the longest and most complex bridge systems in the country. HistoricBridges.org is proud to offer detailed coverage of not just the well-known Mississippi River spans, but also the lesser known but noteworthy approach sections.

The Mississippi River spans with their 668 foot spans (center to center of pins) or 772 feet (overall length) are among the longest simple truss spans in the entire country. This fact, combined with the unusually heavy double-deck design make this bridge a highly significant engineering feat.

One of the approach spans in particular is extremely unusual: the half-through truss span. The truss span is designed with three truss lines. The two northern truss lines supported the highway deck on top as a true deck truss. The southern two truss lines support the railroad line about halfway up the truss height, forming a rare half-through truss layout. To add to the unique design, the northern truss line is a Baltimore truss, while the other two truss lines are Pratt trusses.

Early investigations for locating this bridge were prepared in 1907 including input from two famous engineering firms, Ralph Modjeski and Waddell and Harrington.

Above: Historical construction photo showing main span construction.

Above: Historical construction photo showing 70 foot end post section shipped to site.

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Photos and Videos: MacArthur Bridge

Available Photo Galleries and Videos

Click on a thumbnail or gallery name below to visit that particular photo gallery. If videos are available, click on a video name to view and/or download that particular video.

 
View Photo Gallery
Main and Western Spans Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. Photos of the main spans over the Mississippi River and the St. Louis western approach spans are included here. For the best visual immersion and full detail, or for use as a desktop background, this gallery presents the photos for this bridge in the original digital camera resolution.
View Photo Gallery
Main and Western Spans Photo-Documentation
Mobile Optimized Gallery
A collection of overview and detail photos. Photos of the main spans over the Mississippi River and the St. Louis western approach spans are included here. View the photos for this bridge in a reduced size which is useful for mobile/smartphone users, modem (dial-up) users, or those who do not wish to wait for the longer download times of the full-size photos. Alternatively, view this photo gallery using a popup slideshow viewer (great for mobile users) by clicking the link below.
Browse Gallery With Popup Viewer
View Photo Gallery
Eastern Spans Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This photo gallery is grouped into documentation of the various portions of the sprawling railroad and highway approach spans in East St. Louis. For the best visual immersion and full detail, or for use as a desktop background, this gallery presents the photos for this bridge in the original digital camera resolution.
View Photo Gallery
Eastern Spans Photo-Documentation
Mobile Optimized Gallery
A collection of overview and detail photos. This photo gallery is grouped into documentation of the various portions of the sprawling railroad and highway approach spans in East St. Louis. View the photos for this bridge in a reduced size which is useful for mobile/smartphone users, modem (dial-up) users, or those who do not wish to wait for the longer download times of the full-size photos. Alternatively, view this photo gallery using a popup slideshow viewer (great for mobile users) by clicking the link below.
Browse Gallery With Popup Viewer

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