Historic Bridges
of the United States
Jefferson County
Montana
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Broadwater County, MT
Deer Lodge County, MT
Gallatin County, MT
Lewis and Clark County, MT
Madison County, MT
Powell County, MT
Silver Bow County, MT
Boulder River Bridge
Lost through truss bridge over Boulder River on CR 304
No longer exists
Built 1899; replaced 2001
Jefferson River Bridge
Through truss bridge over Jefferson River on CR 170
Open to traffic
Built 1914
Jefferson River Bridge
Lost two-span through truss bridge over Jefferson River on US 287
No longer exists
Built ca. 1930; replaced 2001