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Mineral Road Bridge

   


Mineral Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: October 18, 2013
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Key Facts

Facility Carried / Feature Intersected
Mineral Road Over Millers River
Location
Rural: Franklin County, Massachusetts
Structure Type
Metal 7 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1888 By Builder/Contractor: Wrought Iron Bridge Company of Canton, Ohio

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
105 Feet (32 Meters)
Structure Length
160 Feet (48.8 Meters)
Roadway Width
12.8 Feet (3.9 Meters)
Spans
1 Main Span(s) and 1 Approach Span(s)
NBI Number
TWN216013100

Historic Significance Rating (HSR)

Bridge Documentation

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

View Massachusetts Historical Commission (MHC) Inventory Forms For This Historic Bridge

This bridge is a traditional example of a bridge built by the Wrought Iron Bridge Company, perhaps the most prolific pre-1900 metal truss bridge builder in the country. However, in this state, bridges by this company are less common than in other states likely due to several regionally prolific bridge builders that would have been stiff competition to the Ohio-based company. The bridge dates to before 1888. The bridge rests on an unusual riveted metal bent which was later partially encased in concrete. The abutments are stone. A steel stringer approach span is present, although the stringers are not original. There was originally a half-hip pony truss approach span there. It was replaced in 1939.

This bridge has been closed to vehicular traffic but remains open to pedestrians and is in good condition.

The historic integrity of the truss appears to be good. One of the end diagonal members (southwest corner) was replaced and the old member cut out. The old eye is still visible around the bottom chord connection. Original railings do not remain on the bridge. An unusual detail removed in 1939 was an eyebar that ran from the bent to the hip vertical bottom chord connection. The eyes still remain at the connection.

This bridge provides great views of the nearby historic French King Bridge. Similarly, this bridge can be viewed from the French King Bridge.

 

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