Boulder County Public Works manages construction projects in unincorporated Boulder County for roads, bridges, multi-use pathways, and drainages.
Construction-Related Travel Impacts
West Coal Creek Drive CLOSED Nov. 3 Through December for Structure Replacement
Crews will replace an aging bridge at the Community Canal starting Nov. 3 which will require a full closure of West Coal Creek Drive between South 66th Street and 76th Street. The closure will be in place until the end of December, weather permitting. South 66th Street will remain open at Marshall Road.
Ridge Road and Hurricane Hill Resurfacing Project Underway
Crews are working on a resurfacing project on Ridge Road and Hurricane Hill Drive outside of Nederland. The project consists of removing several inches of existing pavement, repairing the ground below, and replacing the surface with new asphalt. New guardrail and striping will also be installed. Working hours are 8 a.m. to 4:30 p.m., Monday through Friday. Work on Ridge Road will take place between CO 119 and the end of pavement. All of Hurricane Hill will be resurfaced. Expect delays of up-to 15-minutes in both directions during working hours. The project is expected to be complete in November.
Baseline Road Bridge Replacement – Full Closure of Baseline Road In Place
Baseline Road will be closed between Cherryvale Road and 75th Street through November for a bridge replacement project at Dry Creek. Residents west Dry Creek will be able to access their homes from Cherryvale, while resident east of Dry Creek will access their homes from 75th and 76th streets. The City of Boulder’s Dry Creek Trailhead and trail will also be closed during the bridge replacement. Learn more about the Baseline Bridge Replacement project.
Empire Road Closure for Bridge Rehabilitation
Empire Road/County Road 62 is closed at Coal Creek in both directions, 24-hours a day, seven days a week, through November so crews can rehabilitate the bridge over Coal Creek. The Coal Creek Trail will remain open in this area. View a map of the Empire Road closure project area and road closure.
75th Street Electrical Undergrounding Project – Expect travel delays
Xcel Energy is undergrounding overhead lines along 75th Street between Lookout and Valmont roads. Expect daytime, weekday travel delays. Flaggers will be used to guide cars and bikes around work zones. Work is expected to last through the summer. Learn more about Xcel’s 75th Street project.
CDOT CO 7/Arapahoe Road at 95th Street Improvements Project – Expect Travel Delays
CDOT is working on improvements to three intersections along CO 7/Arapahoe Road, including: Willow Creek Drive; Park Lake Drive, and, CO42/95th Street. Travelers can expect lane shifts which will result in travel delays during working hours, which are 8 a.m. to 8 p.m., Monday through Friday. This project is anticipated to be complete by the end of 2027. Visit the CO7/Arapahoe project webpage for more information, or send an email to co7intersections@gmail.com.
CDOT CO 119/Diagonal Highway Safety, Mobility, and Bikeway Construction – UNDERWAY – Expect travel impacts
CDOT is currently working on this project, which will require significant travel impacts on CO 119/Diagonal Highway between Boulder and Longmont. This project is anticipated to be completed in the Spring of 2027.
Project Hotline – 720-378-8083
Project Email – co119safetyandmobility@gmail.com
Visit CDOT’s CO 119 project Webpage to learn more and to subscribe to the project email list
Helpful Links
- Special Event Permit Requests – Pending and Approved taking place throughout Boulder County
- Utilize CDOT’s COtrip website to see real time traffic condition updates on state highways
- Learn about road closures in the City of Boulder
- City of Boulder Live Traffic Cameras
- Learn about road closures in Longmont
- Learn about road closures in Lafayette
- Learn about road closures in Louisville
- Learn about road closures in Erie