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Mississippi River Bridge Number 15

Omaha Bridge Number 15

   


Mississippi River Bridge Number 15

Primary Photographer(s): Nathan Holth

Bridge Documented: May 31, 2013 and June 3, 2013
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Key Facts

Facility Carried / Feature Intersected
Railroad (Union Pacific) Over Mississippi River
Location
St. Paul: Ramsey County, Minnesota
Structure Type
Metal Rivet-Connected Pratt Through Truss, Movable: Swing (Rim Bearing Bobtail) and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1915 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
260 Feet (79.2 Meters)
Structure Length
1055 Feet (321.5 Meters)
Roadway Width
Not Available
Spans
1 Main Span(s) and 10 Approach Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

This bridge is a large and uncommon example of a bobtail swing bridge. Bobtail swing bridges have an asymmetric design, where one end extending from the swing pier has a longer span for boats, and the other end is usually reserved for counterweight purposes, needed to address the imbalance of weight, a problem that does not exist with traditional center-pier swing bridges. In the case of this bridge a concrete counterweight is present. This bridge features a heavy, massive construction. A series of deck plate girder spans provide an approach to the bridge. The swing span is not in the middle of the river, but is instead on the south side of the river.

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Photos and Videos: Mississippi River Bridge Number 15

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.

 
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Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. 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.
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Bridge Photo-Documentation
Mobile Optimized Gallery
A collection of overview and detail photos. 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 Video
Bridge Opening, Viewed From Boat
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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