Montana Department of Transportation


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Active Project

US 287 North of Three Forks project logo

Project Overview

Current Project Status

Grading and gravel hauling/laying continue throughout this project. Traffic continues to travel on an unfinished gravel surface. Paving is anticipated to begin the week of October 12th, but traffic should continue to travel on the gravel surface initially, and to expect reduced speeds in the construction zone and delays of up to 15 minutes.

Signs with reduced speed instructions are in place to assist with traffic flow and to manage work trucks entering/exiting the site. It is advised that traffic obey the speed limits and consider traveling at a slower rate of speed than advised to avoid potholing in the old road surface and potential damage to vehicles. Motorcycle and bicycle travel on this road is not currently advised.

For weekly construction updates including traffic information, please subscribe to texting updates for ‘us287ThreeForks’ to 47177, or email updates at . You may also contact the Public Information Officer directly at 406-698-3668.

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