Transportation Sales Tax
Valmont Road and bridge after reconstruction

Transportation Sales Tax

In 2001 the voters of Boulder County passed a ballot issue that allowed for a 0.1 percent (one cent on a $10 purchase) countywide transportation sales tax. In 2007, voters approved an extension of the sales tax through 2024. View information about the projects that receive funding from the current transportation sales tax, and information about the county’s proposed transportation sales tax extension.

The Transportation Sales Tax helps fund:

  • Roadway improvements
  • Mobility
  • Priority transit programs
  • Pollution reduction
  • Congestion reduction
  • Safety
  • Efficiency of alternative modes and traffic flows
  • Road widening projects
    • Addition of shoulders appropriate for cycling where approved
    • Repair and construction of roads and bridges

Contact Us

Commissioners’ Office


Commissioners' website


Commissioners’ Office
Boulder County Courthouse
Third Floor
1325 Pearl St.
Boulder, CO 80302
Map and Directions
Hours: 8 a.m. to 4:30 p.m.

Mailing Address

PO Box 471
Boulder, CO 80306