Road Closures - Motorists

Closure Due To Widespread Flood Recovery Efforts

The roads/bridges listed on this page are only the roads that are CLOSED due to the flood event. For a list current road projects that have travel restrictions, visit the Closures & Construction website. 

Due to continued recovery and repair operations associated with the September 2013 flood event, Boulder County is re-establishing restrictions on non-local traffic, including bicycles, in James Canyon from the junction with Left Hand Canyon, through Jamestown, to the junction with State Highway 72 (Peak-to-Peak). The restrictions go into effect immediately. Lefthand Canyon will remain open to all roadway users.

Boulder County Transportation is working to open county roads as soon as safely possible. Thank you for your patience. 



See definitions of "Closed", "Residents, Contractors and Services" and "Residents with Access Cards Only".

Road Name From To Jurisdiction Contact Open To Notes
County Rd Bella Vta S 96th St Louisville 303-666-6565 Closed  
Dillon US 287 east of rock creek Boulder County 303-441-3900 Closed  No Bridge Access
East County Line Rd (Photo) Quicksilver Rd SH 119 Boulder County 303-441-3900 Closed - Bridge out  Roadway and bridge to open on Sunday, Dec. 14
N 51st SH 66 Union Rd Boulder County 303-441-3900 Closed  No Bridge Access
Old South St. Vrain Rd 1400 Block SH 7 Boulder County 303-441-3900 Closed  Bridge Out
Sunset St (Photo) Boston Donovan Longmont 303-651-8416 Closed No access across washout in road.


  1. Closed: Emergency and road maintenance allowed.
  2. Residents, Contractors and Services: Residents and others who have business at a specific address are allowed to access the road.
  3. Residents with Access Cards Only: Road is open to residents who have obtained an access card. The access card and an ID may be required to enter the area. Time being allowed in and out of certain areas may have restrictions.

See All Road Damage Photos

 Related Links


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