Montana Department of Transportation


View the Governor’s Coronavirus Task Force site for more information.

Active Project

US 287 North of Three Forks project logo

Project Overview

Current Project Status

Terrain through the construction zone may be rough and muddy. Efforts to maintain the gravel road have been hindered by weather. Slowly accelerate when you leave the construction zone to avoid throwing mud and gravel at vehicles and flaggers. Delays up to 15 minutes should be expected with additional delays in the Toston Structures construction zone. Motorcycles and bikes may consider an alternate route.

Road construction will stop over the Memorial Day weekend starting noon on Friday and will resume Tuesday morning. There should be no additional delays over the holiday weekend. For your safety, remember to buckle up and please observe the posted construction zone speed limit even when construction crews aren’t present. Have a safe holiday weekend!

This summer, US 287 North of Three Forks will be under construction between Hilltop Road/Copper City Road and Buffalo Jump Road. The 6-mile stretch of highway, located in Broadwater County between I 90 and Townsend, will be widened to 4-lanes. The project will improve stopping and sight distance for increased safety and the wider road should make travel through the area more efficient! Construction will be completed over two seasons (2020 - 2021). Weather permitting, project construction will start the end of March.

Once completed, the highway will support two northbound lanes and two southbound lanes with an additional center turn lane at the junction with Secondary Highway 437 North towards Radersburg. The roadway improvements will connect existing 4-lane sections between the I 90 interchange and Townsend and complete the widening effort for that area.

During construction the speed limit will be reduced to 35 mph in the work zone with flaggers and pilot cars controlling traffic movements when necessary. Traffic may be reduced to one gravel lane during excavation and paving. Bicyclists are advised to contact the Project Hotline prior to travel.

Crews may utilize controlled excavation with explosives on a 2,000-foot section of highway halfway into the road construction zone. This may occur between May and June 2020 and could result in additional traffic delays. Refer to the FAQs for additional information.

Pay attention, slow down and be careful as you pass through the work zone.

US 287 North of Three Forks project hotine number image

UPN: 5183