MDT does not have enough information to say how long any of these restrictions will be in place. Please use alternate routing when applicable.
I-90 Bozeman Hill to Livingston - Closure on May 20, 2025
Effective 05/20/2025
A 30-minute closure of I-90 and the West Bozeman Hill Road / U.S. Highway 10 frontage road is necessary to complete controlled rock excavation operations. The closure is expected to take place on Tuesday, May 20 between 9:30 a.m. and 3:30 p.m. MDT is unable to provide the specific time the 30-minute closure will occur due to nearby train activity on the BNSF railroad. Plan for delays of up to 1 hour if you have time-sensitive travel during the closure window. If additional 30-minute closures are necessary to remove the rock, advance notice will be provided to the public.
More information to be found at: I-90 Bozeman Hill to Livingston - Construction Updates
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
- 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.
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.
