All Trails Closed West of Highway 36 Due to High Wind Conditions Near Louisville

All Trails Closed West of Highway 36 Due to High Wind Conditions Near Louisville

Boulder County Parks & Open Space has closed all trails and trailheads west of Highway 36 due to sustained winds exceeding 80 mph and extreme fire danger conditions. The closure includes all mountain parks, open space properties, and county trails in the foothills. Closures will be reassessed when wind conditions subside.

A community information session will be held at the Longmont library on Friday, April 24 at 5:00 PM. Translation services in Spanish and Nepali will be available. The session will also be livestreamed on the Boulder County YouTube channel.

The project includes improvements along Niwot Road between Longmont and the intersection with Left Hand Canyon Drive. Construction is scheduled to begin in September 2026 with completion expected within 14 months.

Next Steps

Environmental review of the project area near Niwot Road found 9 sensitive species and 1 wetland areas requiring mitigation. The Clerk & Recorder worked with Colorado Parks and Wildlife to develop a habitat conservation plan.

The Pella Crossing open space property encompasses 772 acres and features 9 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.