Old Boulder Bridge

Department: County Commissioners, Road & Bridge

Sweet Grass County is applying for a Treasure State Endowment Program (TSEP) grant to replace the Old Boulder Bridge located just outside the Big Timber City Limits. The existing structure is a three-span, 145-foot long steel pony truss and timber bridge constructed in 1940. The Read More


Department: Uncategorized

Sweet Grass County Bridge at 754 Lower Sweet Grass Road will be closed from April 23, 2018 to May 7, 2018.  NO detour is available, please plan accordingly.  Any questions call Sweet Grass Road Dept at 932-5140.  

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