Public Works Announces Niwot Road Median Closure Near Diagonal Highway Near Longmont

Public Works Announces Niwot Road Median Closure Near Diagonal Highway Near Longmont

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.

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 $79,000 per year. Applications are processed on a first-come, first-served basis.

Historical context: Boulder County was established in 1861 and covers 741 square miles of diverse terrain from the Great Plains to the Continental Divide. The county’s population of approximately 330,000 residents is served by 2486 county employees across 37 departments and offices.

Next Steps

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

The application deadline is June 5, 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 11 business days.

Timeline

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.

The Transportation processed over 5,025 applications last year, with an average processing time of 19 business days. Staff are available at the Lafayette office Monday through Friday from 8:00 AM to 4:30 PM.