Boulder River Bridge
Pony truss bridge over Boulder River on CR 102
Open to traffic
Built 1931; rehabilitated 1991

Boulder River Bridge
Pony truss bridge over Boulder River on CR 102
Open to traffic
Built 1931; rehabilitated 1991

Boulder River Bridge
Pony truss bridge over Boulder River on CR 103 in Big Timber
Open to traffic
Built 1940

Boulder River CR 116 Bridge
Lost pony truss bridge over Boulder River on CR 116
No longer exists
Built ca. 1930; replaced 2002

Greycliff Bridge
Lost two-span through truss bridge over Yellowstone River on CR 001
Replaced by new bridge
Built 1911 by the Security Bridge Co.; relocated here 1918; replaced 1991

Sweetgrass Creek Bridge
Through truss bridge over Sweetgrass Creek on CR 007
Open to traffic
Built 1910

Sweetgrass Creek Bridge
Pony truss bridge over Sweetgrass Creek on CR 014
Open to traffic
Built 1910; rehabilitated 1964

Voges Bridge
Lost through truss bridge over Yellowstone River on CR 028
No longer exists
Built 1914 by the Security Bridge Co.; replaced 2000

West Boulder River Bridge
Pony truss bridge over West Boulder River on CR 143
Open to traffic
Built 1912