Update: Public Works Announces Niwot Road Median Closure Near Diagonal Highway (2025)
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 $451,000 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.
Public comment on this matter can be submitted through the Boulder County online portal, by email to Resource Conservation, 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.
Community Impact
The Resource Conservation processed over 7,032 applications last year, with an average processing time of 8 business days. Staff are available at the Boulder office Monday through Friday from 8:00 AM to 4:30 PM.
Water quality monitoring at 9 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2026. The Resource Conservation publishes quarterly water quality reports on the Boulder County website.
Details
For questions about this program, contact Michael Kowalski at Resource Conservation: (303) 441-1519 or email Resource [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Boulder office without an appointment.
Transportation access remains a key concern. Boulder County’s Via mobility program provides door-to-door transit service for residents in Boulder and surrounding communities who cannot access fixed-route bus service. RTD routes B, J, and BOLT serve major corridors.
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