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12th Street Viaduct

12th Street Trafficway

12th Street Viaduct

Primary Photographer(s): Nathan Holth

Bridge Documented: June 3 and June 5, 2016

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Key Facts

Facility Carried / Feature Intersected
12th Street Over Railroad (BNSF) and Various Streets
Location
Kansas City: Jackson County, Missouri: United States
Structure Type
Concrete Deck Arch, Fixed and Approach Spans: Concrete Deck Girder, Fixed
Construction Date and Builder / Engineer
1914 By Builder/Contractor: Graff Construction Company of Seattle, Washington and Kansas City, Missouri and Engineer/Design: Waddell and Harrington

Technical Facts

Rehabilitation Date
2006
Main Span Length
149 Feet (45 Meters)
Structure Length
2,054 Feet (626 Meters)
Roadway Width
51.8 Feet (15.79 Meters)
Spans
1 Main Span(s) and 43 Approach Span(s)
NBI Number
25397

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View Historical Article About This Bridge

View Detailed Historical Discussion of Bridge In Transactions of the American Society of Civil Engineers

View Missouri Historic Bridge Inventory Sheet For This Historic Bridge

This bridge is historically significant on several levels. It was an early example of a large-scale concrete bridge. While smaller concrete bridges were being built in substantial numbers at the time this bridge was built, it was rare for a large viaduct like this to be constructed of concrete. The bridge is notable for its design by the prestigious engineering firm Waddell and Harrington. Lastly, the bridge's double deck design adds to the significant design of the bridge. In particular, the bridge's main span over the railroad tracks, which is a concrete arch, is very unique on account of the double-deck design, with the lower deck passing through the arch.

 

Above: This drawing from the Transactions of the American Society of Civil Engineers shows the way the falsework for the arch span was set up so as to not disrupt the trains below.

Above: Historical photos showing bridge construction.

 

Above: These photos show the stairway which no longer exists today.


This bridge is tagged with the following special condition(s): Double-Deck

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Photo Galleries and Videos: 12th Street Viaduct

 
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Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: 12th Street Viaduct

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