Drivers heading into the Sun Canyon area should plan for significant delays this week after a rockslide deposited boulders across Sun Canyon Road, prompting emergency removal work by the Helena-Lewis and Clark National Forest.
Crew work began Tuesday, September 8, the first business day after Labor Day weekend. Forest officials say the operation — which involves fracturing and hauling large rock — could take up to a week to complete. Travelers should expect stop-and-go traffic and possible extended waits during active work periods.
Sun Canyon Road provides access to popular recreation areas along the Rocky Mountain Front west of Augusta, including trailheads and private outfitter operations that see heavy late-summer use. The timing, coming immediately after the Labor Day holiday, affects both returning weekend visitors and the early fall hunting and hiking season.
The forest has not announced a full closure, but drivers are advised to check current conditions before heading out and to be prepared for delays of unpredictable length while rock removal continues.