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.

The project includes improvements along Sunshine Canyon Drive between Nederland and the intersection with Sunshine Canyon Drive. Construction is scheduled to begin in June 2026 with completion expected within 6 months.

The Board of County Commissioners will review progress on this initiative at their May 11 business meeting. Agenda items and supporting documents are posted on the Boulder County website 72 hours before each meeting.

Community Impact

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

Public comment on this matter can be submitted through the Boulder County online portal, by email to Area Agency on Aging, or in person at the next Board of County Commissioners meeting. Written comments received by 5:00 PM the day before the hearing will be included in the public record.

Contact Information

Funding of $173,000 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.

The application deadline is July 12, 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 12 business days.