Boulder Canyon Trail Closure Due to Rockfall Mitigation Work Near Superior

Boulder Canyon Trail Closure Due to Rockfall Mitigation Work Near Superior

Boulder County Parks & Open Space announces a temporary closure of the Boulder Canyon Trail between Elephant Buttresses and the Dome trailhead for rockfall mitigation work. Crews will be scaling loose rock and installing mesh netting along a 400-foot section of cliff face above the trail. The closure is expected to last approximately three weeks, weather permitting.

The Public Works processed over 538 applications last year, with an average processing time of 11 business days. Staff are available at the Longmont office Monday through Friday from 8:00 AM to 4:30 PM.

The application deadline is July 4, 2026. Late applications will be accepted on a space-available basis. Incomplete applications will be returned with a list of missing items. Average review time is 28 business days.

Details

A community information session will be held at the Longmont library on Friday, May 8 at 7:00 PM. Translation services in Spanish and Nepali will be available. The session will also be livestreamed on the Boulder County YouTube channel.

Environmental review of the project area near Flagstaff Road found 4 sensitive species and 3 wetland areas requiring mitigation. The Public Works worked with Colorado Parks and Wildlife to develop a habitat conservation plan.