Public Works Announces Niwot Road Median Closure Near Diagonal Highway Near Pine Brook Hills

Public Works Announces Niwot Road Median Closure Near Diagonal Highway Near Pine Brook Hills

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.

Safety data from the Boulder area shows 18 reported incidents in the past 12 months, a 30% change from the previous year. The Sheriff’s Office has increased patrols along Niwot Road and added community outreach programs in response to resident feedback.

Wildfire risk mapping conducted by Wildfire Partners shows that 37% of properties in the Boulder 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.

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The project includes improvements along Niwot Road between Boulder and the intersection with CO-72 Peak-to-Peak Highway. Construction is scheduled to begin in September 2026 with completion expected within 18 months.

The program is modeled after similar successful initiatives in Larimer County and Jefferson County. Boulder County’s version includes additional provisions for wildfire mitigation, affordable housing, and environmental sustainability.