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Military Street Railroad Overpass

Military Street Railroad Overpass

Primary Photographer(s): Nathan Holth

Bridge Documented: April 21, 2003 - April 24, 2010

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Key Facts

Facility Carried / Feature Intersected
Military Street (BL-94) Over Railroad (Abandoned CSX)
Port Huron: St. Clair County, Michigan: United States
Structure Type
Metal Through Girder, Fixed
Construction Date and Builder / Engineer
1906 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Main Span Length
70 Feet (21.3 Meters)
Structure Length
70 Feet (21.3 Meters)
Roadway Width
44 Feet (13.41 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge no longer exists!

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

This bridge has been demolished and replaced!

For over a century this utilitarian structure has served a major road in the city of Port Huron. With a construction date of 1906, the structure is the oldest bridge in Port Huron. The through plate girder bridge has an extremely heavy skew. Unlike some other states like Pennsylvania and New York, Michigan does not have many plate girder highway bridges, and thus this is actually a rare structure for Michigan.

Up until the 21st Century, this bridge allowed trains to pass under it into a rail yard that originally included a ferry to carry trains over the St. Clair River to Canada. This ended long ago, and more recently the railroad line dead-ended at Black River at the yard, until the area's philanthropist organization, Acheson Ventures, bought the CSX rail yard from CSX. This rendered the bridge pointless. Worse, the bridge was in poor shape, and MDOT had as of 2010 added structural supports to make the bridge function like a multi-span bridge. By 2013, the bridge had been demolished and replaced with a hideous looking concrete box culvert that allows pedestrians (who are not claustrophobic) to utilize the rail-trail that now follows the former railroad line.

This bridge has had its historic and aesthetic integrity compromised by a redone sidewalk. This bridge once had very beautiful latticed railings for the sidewalk. When the sidewalk on the bridge was redone, the railings of the main span were replaced - with simple and ugly cyclone fencing. The approaches to the bridge still retain original pole railings, however. Sadly, HistoricBridges.org photos date to after the loss of the lattice railing.

Michigan State Highway Department plaques remain on the bridge as well. These plaques do not reference the original construction of the bridge, but instead some major rehabilitation project that occurred in 1949. No plaque is present on the bridge in regards to the original 1906 erection of this bridge.


Photo Galleries and Videos: Military Street Railroad Overpass

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Bridge Photo-Documentation
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Maps and Links: Military Street Railroad Overpass

This historic bridge has been demolished. This map is shown for reference purposes only.

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