Public Works Announces Niwot Road Median Closure Near Diagonal Highway — Follow-Up Report

Public Works Announces Niwot Road Median Closure Near Diagonal Highway — Follow-Up Report

Boulder County Public Works announces a temporary median closure on Niwot Road near the CO-119 Diagonal Highway intersection for utility infrastructure improvements. The closure will affect left turns from Niwot Road onto the Diagonal Highway for approximately six weeks. A signed detour route will be in place.

Volunteers contributed over 2,832 hours to this program last year. The Parks & Open Space coordinates with 15 nonprofit partner organizations throughout Boulder County to deliver services.

For questions about this program, contact James Rodriguez at Parks & Open Space: (303) 441-9141 or email Parks & Open [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Erie office without an appointment.

How to Participate

The Mud Lake open space property encompasses 1,802 acres and features 13 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.

Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $152,000, making it one of the largest collaborative efforts in the county’s history.

Background

Environmental review of the project area near 75th Street found 5 sensitive species and 1 wetland areas requiring mitigation. The Parks & Open Space worked with Colorado Parks and Wildlife to develop a habitat conservation plan.

Colorado state law requires all counties to provide these services to eligible residents. Boulder County exceeds minimum state requirements by offering expanded hours, multilingual support, and online access. In 2024, the county received a state award for excellence in service delivery.