Boulder County maintains approximately 700 miles of roadway, of which nearly 50 percent are gravel and 50 percent are asphalt surfaced. The county stretches from the plains, at an elevation of 5,280 feet to the Continental Divide, at an elevation near 14,000 feet.
- Check out the official Boulder County Road Map to see which roads are county maintained.
Road Maintenance Division
The Road Maintenance Division handles the following operations and a lot more:
- Learn more about Chip Sealing
- Learn more about Dead Animal Removal
- Learn more about Dust Control
- Learn more about Road Grading
- Learn more about Snow Removal & Plowing
- Learn more about Tree Trimming
- Learn more about Other Functions of Road Maintenance
To request assistance with a county road, use the Maintenance Request Form.
Planning and Engineering
Public Works Engineering works with the Community Planning & Permitting Department’s Development Review team on for property access (driveways) that intersect with county roads.
- Learn more about the county’s Adopt-A-County Road program
- Learn more about No Parking Zone Guidelines
- Learn more about the traffic Traffic Signals maintained by Boulder County
The Boulder County Comprehensive Plan (BCCP) provides guidance on gravel and paved roads accepted for maintenance in unincorporated Boulder County. Per the BCCP, Boulder County Road Maintenance cannot conduct major repairs (full roadway resurfacing) on subdivision roads, which are called “Local Access Roadways.” Our crews still conduct maintenance operations on local access 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 local access/subdivision roads.