Road Construction and Infrastructure Project Work

Road reconstruction typically requires warmer weather. In this part of the country that means road construction overlaps with the primary visitor season of May through October. There will be minimal road construction occuring in 2026 that will impact travel times within Glacier National Park. However, a spring and fall closure for the Two Medicine area will occur due to a utility project in the Two Medicine developed area and campground.

 

Two Medicine Spring and Fall Closure

In 2026, a spring and fall closure will occur for the Two Medicine area due to a utility project and road rehabilitation project. The Two Medicine utility project will begin in April 2026. This project includes replacement of the full water distribution system in the Two Medicine developed area and campground. To facilitate construction, Two Medicine Road will be closed at either the Running Eagle Falls Trailhead or the park boundary.

Closures in the Two Medicine developed area will occur outside of concession operating dates, May 29–September 7. Concessioner operated boat tours will run and the Two Medicine Campstore will remain open from May 29–September 7. The park will maintain access to hiking trails as feasible, but access to some trails may be limited. The Two Medicine Campground will be closed in 2026.

In fall 2025, Two Medicine Road was closed to facilitate replacement of a deep culvert. The culvert work was part of a large, multi-year Two Medicine Road Rehabilitation project which includes full rehabilitation of the Two Medicine Road from MT-49 intersection to the parking lot at Two Medicine Lake. The road rehabilitation includes ditch re-establishment, road repair, parking lot construction, replacement of entrance station buildings, and paving. This work is scheduled to resume this fall 2026 and be completed late 2027 but may continue into 2028. Closures outside of the park associated with this project have not been determined.

Camping at Two Medicine Campground will not be available in 2026 due to construction.

 

North Fork–Polebridge

Construction to replace the Polebridge Ranger Station area’s water supply system, water distribution system, and water tank is expected to begin August 2026. This work is expected to have minimal impact to visitors until October 4, 2026 when the water main and water tank installation work along the Inside North Fork Road is anticipated to start. This will require a full closure to all traffic traveling towards Logging Creek from the Polebridge Ranger Station. Trenching in front of the Polebridge Ranger Station is also expected in October 2026.

Public access to Bowman Lake and Kintla Lake will remain unaffected by construction. It is expected that all significant construction activities will be completed in November 2026. Heavy construction is not expected in the winter. Any remaining road restoration or area restoration work will be completed by summer 2027.

 

Many Glacier–Swiftcurrent

In 2025, the Many Glacier-Swiftcurrent area was closed due to the replacement of the water system in the Swiftcurrent developed area. The project also rehabilitated the road between the Many Glacier Hotel intersection and the Swiftcurrent area, while addressing parking concerns and pedestrian safety. The Swiftcurrent area now has 339 parking spaces, an increase of 171 parking spaces. Construction is completed and not anticipated in Many Glacier in 2026.

 

Timeframe of Road Work and Project Construction in Affected Location (project dates highlighted in yellow)		June	July	Aug	Sept	Oct	Nov
North Fork
Inside North Fork Road	Beginning October 2026, a full closure will be in place to all traffic on the Inside North Fork Road from the Polebridge Ranger Station to Logging Creek.
Going-to-the-Sun Road
North Lake McDonald Road	Anticipated culvert work is planned for fall 2026.
St. Mary
St. Mary Campground and Visitor Center	Fall 2026–Spring 2027, a water distribution system replacement will occur in the St. Mary Campground, administrative area, and around the St. Mary Visitor Center. Partial closures in the St. Mary Campground are anticipated.
Two Medicine
Two Medicine Developed Area and Campground	In April 2026, a utility project will begin to replace the water distribution system in the Two Medicine developed area and campground. A spring and fall closure will occur for the Two Medicine developed area. The Two Medicine Campground will be closed in 2026.
Two Medicine Road Closure	Begun fall of 2025, the multi-year Two Medicine Road Rehabilitation project, which includes full rehabilitation of the Two Medicine Road from MT-49 intersection to the parking lot at Two Medicine Lake, is scheduled to resume in the fall of 2026.