MDT does not have enough information to say how long any of these restrictions will be in place. Please use alternate routing when applicable.

Construction Projects on US-87 & MT-200

Effective 04/25/2025

Before going through the projects listed below, if you are exceeding 12 feet wide on these routes for term permits, we will be requiring permission, in writing, from the EPM (or DOWL) to the Carrier. Please contact Lisa Olmsted with DOWL at (833) 377-0453 or by email at mt200@dowl.com.

  • US-87 from Milepost 94.2 to 108.0 (est. 5 miles West of Grass Range, MT)
  • MT-200 from Milepost 119 to 121 (est. 7 miles East of Grass Range, MT)

Hwy 91 Big Hole River Bridge 22 Miles N of Dillon

Effective 10/22/2024. Full closure of the Big Hole River Bridge that carries Hwy 91 approximately 22 miles north of Dillon.

Bridge Location

Latitude: 45.526644 and Longitude: - 112.701969

The bridge can no longer carry traffic safely or reliably and will remain closed until further notice.

US-2 Bridge over Kootenai River

Effective 03/07/2024. No overweight loads, loads over legal weight, including permitted loads, are prohibited until further notice from using the US-2 Bridge over Kootenai River at milepost 11.6. The Bridge is approximately 2 miles northwest of Troy, MT.