Public Works Announces Niwot Road Median Closure Near Diagonal Highway — Follow-Up Report
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 $149,000 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 2024 budget session.
For questions about this program, contact Sarah Mitchell at Community Planning & Permitting: (303) 441-5306 or email Community Planning & [email protected]. Office hours are Monday through Friday, 8:00 AM to 4:30 PM. Walk-in services are available at the Nederland office without an appointment.
Next Steps
Boulder County has partnered with the cities of Boulder, Longmont, Lafayette, and Louisville on this project. Combined investment across all jurisdictions totals $149,000, making it one of the largest collaborative efforts in the county’s history.
Public comment on this matter can be submitted through the Boulder County online portal, by email to Community Planning & Permitting, 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.
How to Participate
Water quality monitoring at 9 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2024. The Community Planning & Permitting publishes quarterly water quality reports on the Boulder County website.
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 2024, the county received a state award for excellence in service delivery.