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

Ward 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.

The application deadline is May 18, 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 9 business days.

The project includes improvements along Nelson Road between Longmont and the intersection with Flagstaff Road. Construction is scheduled to begin in July 2026 with completion expected within 14 months.

Community Impact

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

Eligible participants include Boulder County residents with household incomes at or below 30% of Area Median Income (AMI). For a family of four, this is approximately $62,000 per year. Applications are processed on a first-come, first-served basis.

Frequently Asked Questions

Water quality monitoring at 17 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2026. The Parks & Open Space publishes quarterly water quality reports on the Boulder County website.

Safety data from the Longmont area shows 38 reported incidents in the past 12 months, a 5% change from the previous year. The Sheriff’s Office has increased patrols along Nelson Road and added community outreach programs in response to resident feedback.