Montana Department of Transportation

Public Involvement

East of Thompson River - East logo image

Construction Update

  • Work will take place during daylight hours, typically 7:30 a.m. – 5:00 p.m.
  • Traffic will follow pilot cars through the construction area.
  • Expect 10 - 15 minute delays.
  • Closures are NOT anticipated.
  • The construction zone is approximately 2.7 miles long and is located between milepost 56 and 60 on Highway 200 east of Thompson Falls.
  • Speed limits will be reduced; slow down and use caution.

Project Overview

The Montana Department of Transportation is making safety improvements to Highway 200 approximately 7 miles east of Thompson Falls. The construction project begins near the Thompson River Bridge and extends 2.7 miles east towards Plains. The construction work zone is between milepost 56 and 60.

Safety improvements include:

  • Widening the travel lanes to 12 feet, adding 4-foot-wide shoulders and guardrails.
  • Stabilizing uphill slopes, removing rocks and installing rock fall barriers.
  • Extending wildlife fencing and installing Wildlife Deterrent Mats.
  • Installing a wildlife crossing underpass bridge and pipe culvert.
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 the spring 2019. 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 Anticipated to begin spring 2019