Montana Department of Transportation


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Active Project

US 287 North of Three Forks project logo

Project Overview

Current Project Status

Traffic will continue to transition between the old road and sections of finished gravel. Watch for flaggers and construction zone messaging. Consider an alternate route if traveling by motorcycle or bicycle. Plan for delays up to 15 minutes.

The next round of controlled excavation is planned for Tuesday, August 4th at 2:00 pm. Plan for travel delays up to 45 minutes.

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 Toston, will be widened to 4-lanes. The project will bring this section of US 287 into compliance with current design standards and improve stopping and sight distance. Construction is expected to be completed over two seasons (2020 - 2021). Weather permitting, paving will be completed Fall 2020 with final improvements completed by Summer 2021.

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 Toston in order to complete roadway improvements in this 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 prior to travel.

Crews will utilize controlled excavation on a section of highway which will result in additional traffic delays. Advanced notice will be provided when delays longer than 15 minutes are expected. 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: 5813