Level 2 Fire Restrictions in effect for western areas of Boulder County. No fireworks, fires, open flame, or shooting (see map and flyer).

Many County services are being offered online. Additionally, a variety of resources are available for those impacted by COVID-19.

Roads & Transportation

Public Works Information Concerning COVID-19

Boulder County Public Works staff are working remotely to help prevent the community spread of COVID-19. The Department remains operational, but staff and public presence at county facilities has been restricted. If you need to reach Public Works staff and don’t have direct email or phone information, please call 303-441-3900.

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. Roadway projects that are currently underway will continue as planned. Upcoming projects will also proceed. Information on road construction projects and their travel impacts can be found on the Closures and Construction webpage.

Resource Conservation Division – Recycling and Hazardous Materials Management Facility

Boulder County Hazardous Materials Management Facility (HMMF) is CLOSED. The county is limiting access to all county facilities and buildings due to the current COVID-19 health situation, including:

  • NO Business Appointments
  • NO ReUse Customers

We are asking everyone to please refrain from visiting any county facility unless absolutely necessary. Thank you for your patience and understanding.

Roads & Transportation

Learn about transportation projects, construction, planning, and road maintenance. Access transportation programs and maps designed to increase mobility throughout Boulder County.

What's New?

Traffic Impact Announcements

South Boulder Road (Cherryvale to McCaslin) Reconstruction Project – Expect delays – Learn more

Lower Fourmile Canyon Drive (CO 119 to Salina) Flood Recovery Project – NO BIKES during working hours until Friday, July 3. Up-to 15-minute delays for motor vehicles through July 2020

Olde Stage Road Retaining Wall and Culvert Installation Project – Lane closures in place 24/7, May through August – Learn More

Boulder County Road Statistics:

  • 398 miles of paved road
  • 269 miles of gravel road
  • 71 miles of “J” or “Jeep” roads
  • 91 major bridges
  • 420 minor structures “large culverts and smaller bridges”
  • 7,000 small culverts (approximately)
  • 19 traffic signals & 7 school-zone flashing signs

Mobility Choice Blueprint

The Mobility Choice Blueprint is a collaborative strategy to help the Denver metro region identify how to best prepare for and invest in the rapidly changing technology that is revolutionizing transportation mobility. A unique planning and funding partnership of CDOT, DRCOG, RTD and the Denver Metro Chamber is creating the Mobility Choice Blueprint – a coordinated strategic direction for the evolving mobility of the region related to walking, bicycling, driving, and transit. The 2030 Blueprint will analyze travel trends and technologies in the region, explore an evaluate various technologies and their implications for mobility, align transportation investments of multiple public agencies, and create new planning and implementation partnerships.

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)

Engineering Division

  • 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. Our mission is to provide convenient, cost-effective facilities and programs to help Boulder County reduce waste disposal, protect the environment, and conserve natural resources.

Road Maintenance

  • 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 the online form

Contact Us

Transportation Department

Submit a question


2525 13th Street
Boulder, CO 80304

Map & Directions

Hours: 8 a.m. - 4:30 p.m. M-F

Mailing Address

P.O. Box 471
Boulder, CO 80306