Fourmile Canyon Community Briefing: Public Works Announces Niwot Road Median Closure Near Diagonal Highway

Fourmile Canyon Community Briefing: 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.

Data from the 2025 Boulder County Community Survey shows that 39% of respondents rated this service as “important” or “very important.” The survey, conducted every two years, received 2,693 responses from residents across the county.

Water quality monitoring at 10 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2025. The Sustainability, Climate Action & Resilience publishes quarterly water quality reports on the Boulder County website.

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Volunteers contributed over 846 hours to this program last year. The Sustainability, Climate Action & Resilience coordinates with 22 nonprofit partner organizations throughout Boulder County to deliver services.

Funding of $425,000 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 2025 budget session.