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The Boulder River Bridge

The Boulder River Bridge is a Montana historical marker in Jefferson County.

Red Bridge Road at MP 1.0 south of Boulder

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The trusses on this structure were salvaged from the “Hubbard” or “Red” Bridge. The original structure was built by the Gillette-Herzog Manufacturing Company in 1899. The company was one of several Minnesota-based bridge construction firms active in Montana from the late 19th century to the early 1920's. The bridge was one of eight pin-connected Pratt through truss spans built by the company over a ten-year period beginning in 1891. It provided access to Boulder from the rich mining and ranching operations located on the west side of the river. The design of this structure represents an accord between local citizens wanting to preserve some aspect of the original bridge, while providing a structure that could accommodate modern traffic needs. The new bridge represents the best of late 19th century and late 20th century technologies.

Slide toward Today to fade the historical sheet and see the modern map underneath.

USGS Historical Topographic Map Collection

Historical maps covering this location

Idaho, Montana and Wyoming, 1884, covering the location of The Boulder River Bridge, with a pin at the marker's coordinates
Idaho, Montana and Wyoming, 1884, covering this location. David Rumsey Map Collection, Stanford Libraries. The pin is ours, placed from the marker's coordinates.
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For example, one family's tree showed the Articles of Confederation marker in Pennsylvania standing under a mile from where William Gabby lived in the 1760s.

What that marker records spans 1777 to 1789, overlapping William Gabby's years there.

From one family's 77-marker roster

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Marker data: Montana Department of Transportation, Montana's Historical Highway Markers, marker texts reproduced with the Department's written permission.

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