- 740 miles of roadway
- 401 miles of paved road (asphalt and concrete)
- 339 miles of gravel road
- Learn more about county roads, bridges and culverts
- 18 traffic signals & 7 school-zone flashing signs
Public Works Department - Building Services, Fleet Services, Resource Conservation, Road Maintenance, and Transportation Engineering
Compost Guideline Changes Effective April 1
Starting April 1, you will only be able to compost food and yard/plant trimmings per new guidelines set by the region’s compost processor. Learn more on the Compost Changes FAQ webpage.
North 95th Street (Valmont to Lookout) Reconstruction & Resiliency Project – 2023/2024 construction
Boulder County Public Works is planning to reconstruct North 95th Street between Valmont Road and Lookout Road along with improvements to protect both the road and surrounding open space properties from damage during flood events. This is the final segment of a multi-year effort to reconstruct North 95th Street between Lafayette and Longmont. Learn more.
Updated No Parking Guidelines Available for Public Comment
No parking guidelines are currently being updated. A draft of the new guidelines is currently available for public comment. Learn more
120th Street Shoulders Project – Overlook Drive to Dillion Road
Planned reconstruction of 120th Street between Overlook Drive and Dillon Road to widen road for new five-foot shoulders and reduce steep hill grades on corridor. Learn More
North 71st Street – Winchester to CO 52 – Reconstruction Project starts March 2023 – Full Roadway Closure
Reconstruction of N. 71st Street, between CO 52 and Winchester Circle is planned for 2023. Work is anticipated to start in late March 2023 and will last through 2023. The project will require the closure of N. 71st Street north of Winchester Circle. Learn more.
Traffic Impact Announcements
N. 71st STREET RECONSTRUCTION PHASE II – FULL CLOSURE WINCHESTER TO CO 52 STARTS MARCH 20 – Project Webpage
South Boulder Road Concrete Replacement COMPLETED – Learn more.
Learn about all current roadway projects and their travel impacts on our Closures & Construction webpage.
Boulder County Road Statistics:
Connect with us!
COVID-19 Building Safety
Information Concerning COVID-19
The Public Works Department remains fully operational, but staff and public presence at county facilities has been restricted to 8 a.m. to 4:30 p.m. on Tuesdays and Thursday. If you need to reach staff and don’t have direct email or phone information, please call 303-441-3900. You can also use the online report form to let us know about a roadway issue or submit a question to the department. All day-to-day operations will continue to function. Road Maintenance will continue to take care of issues that arise on county roads, including snow removal operations. Information on road construction projects and their travel impacts can be found on the Closures and Construction webpage.
If you need to contact the Community Planning & Permitting Department and the Transportation Planning Division, visit their website or call 303-441-3930.
Subdivision Road Maintenance
The Boulder County Comprehensive Plan (BCCP) provides guidance on gravel and paved roads accepted for maintenance in unincorporated Boulder County. The BCCP stipulates that funding for major repairs should be prioritized for the county’s arterial and collector roadways, and that funding of local access roads (aka “subdivision roads”) shall be the responsibility of those served by the road (property owners).
While the county does not conduct major repairs (full roadway resurfacing) on subdivision roads, our Road Maintenance crews still conduct operations on these roads, including: snow removal; pothole patching; clearing of ditches, culverts, and other drainage structures; replacement/repairs of sidewalks; and, roadway crack sealing and patching to maintain public safety.
Learn more about maintenance and repairs of local access/subdivision roads in unincorporated Boulder County.
Department Divisions (hover over image to learn more)
- Design and construction of all county transportation projects
- Projects include (but are not limited to) – paving, bridge construction, bikeways, shoulders, regional trails, drainage structures
Building Services Division
- Manages all county facilities to ensure the safety of staff and visitors
Fleet Services Division
- Manages the county’s fleet of vehicles and machinery
- Performs maintenance and repairs
- Purchases vehicles and equipment
- Works to improve the fleet’s sustainability
Learn more about Boulder County’s Fleet Electrification goals!
Resource Conservation Division
The Resource Conservation Division strives to lead and promote actions that will help Boulder County reach its goal of Zero Waste or darn near by 2025. Their mission is to provide convenient, cost-effective facilities and programs to help Boulder County reduce waste disposal, protect the environment, and conserve natural resources.
- Our Road Maintenance team keeps our roads safe and clean!
- Responsibilities include: culverts, dust control, paving, asphalt and gravel, road grading, road signs, snow plowing and removal, tree and brush removal, and many other tasks
- Roadside mowing and weed control is the responsibility of the county Parks & Open Space Department – 303-678-6200
- Ditches are the responsibility of the ditch owner – Learn more
- Road Maintenance contact – 303-441-3962 or use the online report form