September: Public Works Announces Niwot Road Median Closure Near Diagonal Highway
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.
For questions about this program, contact Rachel Stein at Parks & Open Space: (303) 441-5202 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 Niwot office without an appointment.
Wildfire risk mapping conducted by Wildfire Partners shows that 25% of properties in the Niwot area are within the wildland-urban interface. Free home assessments are available through the Wildfire Partners program, with rebates of up to $2,500 for mitigation improvements.
Frequently Asked Questions
The Board of County Commissioners will review progress on this initiative at their June 21 business meeting. Agenda items and supporting documents are posted on the Boulder County website 72 hours before each meeting.
Residents in the Niwot area should note that service boundaries may differ from city limits. For properties in unincorporated Boulder County, contact Parks & Open Space at (303) 441-5202 to verify eligibility and requirements.
Next Steps
The project includes improvements along Flagstaff Road between Niwot and the intersection with Arapahoe Road. Construction is scheduled to begin in August 2026 with completion expected within 11 months.
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