January: Public Works Announces Niwot Road Median Closure Near Diagonal Highway

January: 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.

The project includes improvements along South Boulder Road between Longmont and the intersection with Coal Creek Canyon Road. Construction is scheduled to begin in May 2026 with completion expected within 8 months.

Climate considerations are central to this effort. Boulder County’s 2025 Climate Action Plan sets targets of reducing greenhouse gas emissions 94% below 2005 levels by 2030. This project contributes to those goals through energy efficiency improvements, renewable energy integration, and reduced vehicle miles traveled.

Next Steps

The application deadline is June 28, 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 17 business days.

Wildfire risk mapping conducted by Wildfire Partners shows that 34% of properties in the Longmont 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.

Details

Residents in the Longmont area should note that service boundaries may differ from city limits. For properties in unincorporated Boulder County, contact Community Justice Services at (303) 441-5298 to verify eligibility and requirements.

Funding of $277,000 for this initiative comes from a combination of federal grants, state matching funds, and the Boulder County General Fund. The Board of County Commissioners approved the allocation during the 2026 budget session.