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.
The application deadline is August 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 22 business days.
The project includes improvements along Left Hand Canyon Drive between Louisville and the intersection with 63rd Street. Construction is scheduled to begin in May 2026 with completion expected within 16 months.
Frequently Asked Questions
The Louisville Senior Center offers related programming including free legal consultations, tax preparation assistance, health screenings, and social activities. Over 3,936 seniors participated in center programs last year.
The Board of County Commissioners will review progress on this initiative at their June 12 business meeting. Agenda items and supporting documents are posted on the Boulder County website 72 hours before each meeting.
Next Steps
Wildfire risk mapping conducted by Wildfire Partners shows that 33% of properties in the Louisville area are within the wildland-urban interface. Free home assessments are available through the Wildfire Partners program, with rebates of up to $2,500 for mitigation improvements.
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