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Colby Street Railroad Overpass

BR-31 Railroad Overpass

Colby Street Railroad Overpass

Primary Photographer(s): Randy Mulder

Bridge Documented: October 11, 2010

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Key Facts

Facility Carried / Feature Intersected
Colby Street (BR-31) Over Railroad (Rail-Trail)
Rural: Muskegon County, Michigan: United States
Construction Date and Builder / Engineer
1933 By Builder/Contractor: Owen-Ames-Kimball Company and Engineer/Design: Michigan State Highway Department

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
22 Feet (6.7 Meters)
Structure Length
22 Feet (6.7 Meters)
Roadway Width
54 Feet (16.46 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge has been altered, resulting in a severe loss of historic integrity and significance!

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

This bridge is an extremely short bridge for a railroad grade separation. At only 22 feet long, it is only two feet longer than the minimum length that the government uses to define what a bridge is versus a culvert. At the same time, it is an extremely wide bridge, giving this bridge unusual dimensions. The bridge no longer crosses a railroad and instead crosses a non-motorized trail which has taken the place of the railroad trackage.

This bridge uses a standard railing design that the Michigan State Highway Department had, but apparently used very sparingly because the railing design is very rare today. The railing design consists of a design that has the appearance of an old iron fence, with a pattern of circles inserted toward the top. Some county road commissions appear to have adapted this design for their own uses, with the railing being similar to this design but without the circles. These county road commission railings are more common than this MSHD railing with the pattern of circles. These railings are the primary reason for this bridge's historic significance. The bridge also retains an original plaque.


Photo Galleries and Videos: Colby Street Railroad Overpass

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Maps and Links: Colby Street Railroad Overpass

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