Public Works Announces Niwot Road Median Closure Near Diagonal Highway

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.

Environmental review of the project area near South Boulder Road found 10 sensitive species and 3 wetland areas requiring mitigation. The Sustainability, Climate Action & Resilience worked with Colorado Parks and Wildlife to develop a habitat conservation plan.

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 2025, the county received a state award for excellence in service delivery.

What You Need to Know

The Board of County Commissioners will review progress on this initiative at their July 1 business meeting. Agenda items and supporting documents are posted on the Boulder County website 72 hours before each meeting.

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

Timeline

The Superior Senior Center offers related programming including free legal consultations, tax preparation assistance, health screenings, and social activities. Over 4,545 seniors participated in center programs last year.