Public Works Announces Niwot Road Median Closure Near Diagonal Highway — Superior Area

Public Works Announces Niwot Road Median Closure Near Diagonal Highway — Superior Area

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 Coalton Trail open space property encompasses 373 acres and features 4 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.

Funding of $29,000 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.

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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.

Safety data from the Erie area shows 38 reported incidents in the past 12 months, a 16% change from the previous year. The Sheriff’s Office has increased patrols along 63rd Street and added community outreach programs in response to resident feedback.

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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 2026, the county received a state award for excellence in service delivery.