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Removal Of The Toston Bridge
Author: Montana Department Of Transportation

Removal of the Toston Bridge

Montana Department of Transportation

Thank you for your comments regarding the removal of the historic Toston Bridge. After careful consideration by Broadwater County and the Montana Department of Transportation (MDT), it was determined that removing the structure is the most appropriate course of action. We recognize that this decision is not popular and that the bridge has long been an important historic feature in Toston.

The bridge, constructed in the 1920s, has far exceeded its intended design life. Current evaluations of the deck, superstructure, and substructure rate their conditions from serious to poor. Even leaving the bridge in place would pose risks to the traveling public.

The structure endures constant stress from supporting its own weight and withstanding the Missouri River’s current. Should the bridge collapse, it could also damage the mainline US 287 structure. Rehabilitation for even limited pedestrian use is estimated to cost more than $10 million.

MDT is utilizing off-system bridge funding to cover the cost of removing the structure. This federal funding source allocates approximately $10.3 million annually statewide. The most recent Statewide Transportation Improvement Program (STIP) identifies approximately $71,178,169 in off-system bridge needs across Montana counties—not including additional project nominations submitted after publication.

Commissioner Randolph requested information regarding pedestrian access from Toston to the west side of the river. At this time, we do not have any projects planned that include a new structure for pedestrian connectivity. Pedestrians will need to use the US 287 mainline structures. The electrified wildlife deterrent mats and signage previously directing pedestrians to use the bypass structure have been deactivated or removed.

We understand that the existing bridge has provided pedestrian access for generations. However, we must prioritize off-system bridge funding to support freight movement, emergency response, and other essential transportation needs.

If you have any additional questions, please feel free to contact me directly at the MDT Butte District Office.

Brandon Jones, P.E.

Butte District Project Development Engineer, Montana Department of Transportation