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Dort Highway Railroad Overpass

M-54 Railroad Overpass

Dort Highway Railroad Overpass

Primary Photographer(s): Nathan Holth

Bridge Documented: August 14, 2003 and April 2010

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Key Facts

Facility Carried / Feature Intersected
Railroad (Canadian National) Over M-54 (Dort Highway)
Flint: Genesee County, Michigan: United States
Structure Type
Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1936 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
77 Feet (23.4 Meters)
Structure Length
104 Feet (31.7 Meters)
Roadway Width
Not Available
1 Main Span(s) and 2 Approach Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

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

This is a historically intact example of a deck plate girder railroad overpass. A limited number of similar overpasses exists elsewhere on Michigan, all apparently designed by the Michigan State Highway Department. The exact design of each overpass can vary however including both structural and architectural details. This overpass is distinguished by its well decorated substructure which includes an unusual design where a pier and abutment are combined to provide a span over the sidewalks. This bridge is missing its Michigan State Highway Department plaques. Much of the structure has rusted, but all the original elements appeared to remain in 2003, including the guardrails which were built to the Type R4 railing design that Michigan State Highway Department used. Sometime between 2003 and 2010 someone (probably the railroad) stupidly decided to remove the original railings and put ugly lightweight railings on the bridge in its place. This alteration had a significantly detrimental effect on the aesthetic quality of the overpass. The new railings are less substantial than the original railings, so it is not even clear what was gained from this alteration. The historic railings were rusted, but if the railroad had wished them to be replaced, MDOT likely could have provided R4 railing panels to replace them. MDOT maintains a stockpile of R4 railings salvaged from replacement projects that are available for preservation work.

This bridge is similar to the M-53 Imlay City Railroad Bridge.


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