Boulder Canyon Trail Closed Due to Bridge Abutment Hole in Colorado

The Boulder Canyon Trail along Colorado 119 is closed until further notice due to a hole under a bridge abutment. The closure is located a quarter-mile east of Fourmile Canyon Drive. No detour is available as the county develops a repair plan and obtains necessary permits. The project is complex due to nearby water utility infrastructure.

Published Mar 29, 2026

A section of the Boulder Canyon Trail in Colorado is closed at a bridge located a quarter-mile east of Fourmile Canyon Drive due to a hole that formed under the bridge's abutment. County staff are working on a repair plan and securing permits, but no detour is available.

AI-curated by Theia

The project is complicated by the proximity of Boulder Creek and existing water utility infrastructure. There is currently no timeline for when the trail will reopen.