Roads & Transportation

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?

Transportation Department Mission Statement:

Boulder County Transportation is committed to providing excellent service and quality transportation infrastructure. We provide a reliable network of roadways, bikeways, trails and transit service to residents and visitors while ensuring the health, safety, and welfare of the public. We plan, construct, and maintain a high-quality, safe, multi-modal transportation network and related services, in a responsive manner, within budget, and on-schedule that results in high customer service.

Unincorporated County Transportation Infrastructure

Boulder County maintains:

Departmental Divisions

Planning Division:

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

Multi-Modal Division:

Road Maintenance:

  • 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

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

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