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.

Funding of $372,000 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 2026 budget session.

Residents in the Erie area should note that service boundaries may differ from city limits. For properties in unincorporated Boulder County, contact Transportation at (303) 441-7051 to verify eligibility and requirements.

Timeline

The project includes improvements along SH-119 Diagonal Highway between Erie and the intersection with Baseline Road. Construction is scheduled to begin in August 2026 with completion expected within 6 months.

The Erie Senior Center offers related programming including free legal consultations, tax preparation assistance, health screenings, and social activities. Over 2,405 seniors participated in center programs last year.

Related Programs

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 2026, the county received a state award for excellence in service delivery.

The program is modeled after similar successful initiatives in Larimer County and Jefferson County. Boulder County’s version includes additional provisions for wildfire mitigation, affordable housing, and environmental sustainability.