The Boulder County (and Colorado) Flood of 2013 has dramatically impacted travel along our roads and highways, limiting access to residential areas in the foothills and mountains of Boulder County. Please visit the Boulder County Flood 2013 website for flood-related information on road status, private roads, bridges and culverts, public transit, and more.

See Also:
Road Closure Map
Road Damage Photos

Works to ensure safe and efficient public transportation, both within Boulder County and along regional transportation corridors. The Transportation Department is made up of six divisions: Administration, Engineering, Fleet, Multi-Modal, Planning and Road Maintenance.

Road Closures & Construction

Current road closures and construction information are located on the Construction page.

Letter of Map Revision (LOMR) for N. 63rd Street

  • Final letter from FEMA formerly adopting the new floodplain.

Meetings & Public Open Houses

Current and upcoming meetings and public open house information is available on the Roads & Transportation page or by viewing the event calendar.


Community-Wide Eco Pass Feasibility Study

Download the full report.


Engineering and Planning Divisions

303-441-4594 (fax)

Mailing Address

PO Box 471
Boulder, CO 80306


2525 13th St.
Suite 203
Map and directions
8 a.m.-4:30 p.m. M-F

Road Maintenance Division

303-682-6714 (fax)


5201 St. Vrain Road,
Building 5
Map and directions

Hours: Mid-April to October
6 a.m.-4:30 p.m. M-Th

October to Mid-April
7 a.m.-3:30 p.m. M-F