Montana Department of Transportation

Malcolm “Mack” Long, Director


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Public Involvement

East of Thompson River - East logo image

Project Overview

The Montana Department of Transportation is making safety improvements to Highway 200 approximately seven miles east of Thompson Falls. The project begins near the Thompson River Bridge and extends 2.7 miles east towards Plains.

Improvements include:

  • Widening the travel lanes to 12 feet, adding 4-foot-wide shoulders and guardrails.
  • Stabilizing uphill slopes, removing rocks and installing rockfall barriers.
  • Extending wildlife fencing and installing Wildlife Deterrent Mats.
  • Installing a wildlife crossing underpass (bridge).
East of Thompson River - East map image
East of Thompson River - East Map
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Why is the project needed?

Safety is MDT's first priority. This section of Highway 200 has a higher than average crash rate. Wildlife such as bighorn sheep and rocks in the roadway are a significant cause of crashes. In addition, the highway was built in the 1930’s with 11-foot-wide lanes and 1-foot-wide shoulders. This project will address wildlife and rock fall safety concerns, and widen the roadway and will shoulders.

Anticipated Construction

Construction will occur in two phases. The first phase is anticipated to take place in November – December 2018. Phase 2 of construction is anticipated to begin in April 2019 and take four months to complete. Construction phasing, schedules and traffic impacts are dependent on weather conditions. MDT will notify the community through the media, updates to this website, and email notifications about changes. Check MDT Travel Info for real-time updates.

Phase 1 Construction November – December 2018
Phase 2 Construction April - Fall 2019