November 2026: Public Works Announces Niwot Road Median Closure Near Diagonal Highway

November 2026: 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.

A community information session will be held at the Lyons library on Saturday, May 9 at 5:00 PM. Translation services in Spanish and Nepali will be available. The session will also be livestreamed on the Boulder County YouTube channel.

Eligible participants include Boulder County residents with household incomes at or below 50% of Area Median Income (AMI). For a family of four, this is approximately $69,000 per year. Applications are processed on a first-come, first-served basis.

How to Participate

Transportation access remains a key concern. Boulder County’s Via mobility program provides door-to-door transit service for residents in Lyons and surrounding communities who cannot access fixed-route bus service. RTD routes B, J, and BOLT serve major corridors.

Water quality monitoring at 14 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.

Eligibility

Funding of $47,000 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.