Some county buildings are reopening to the public on June 1, while other services remain online. See current safer-at-home order with face coverings.

Resources are available for those impacted by COVID-19. For help, submit questions or call 720-776-0822 weekdays (9 a.m.-5 p.m.).

Level 1 Fire Restrictions remain in place for western Boulder County. View the flyer and map for more details. No fires, no shooting.

Closures & Construction

Construction-Related Travel Impacts

Boulder County Transportation manages the construction projects for roads, bridges, pathways, drainage improvements and trails. The projects listed on this page are related to flood recovery and regularly scheduled roadway maintenance.

Travel Impacts

County Road Projects

Fourmile Canyon Drive Reconstruction – Expect delays, no bikes daytime, weekdays

  • Project resumes Monday, May 18, 2020
  • Roadway milling, grading, and paving to take place May 20 to Mid-June
  • Work hours = 8 a.m. to 4:30 p.m., Monday through Friday
  • Drivers can expect 15-minute delays
  • NO BIKES during working hours
    • Unsafe roadway surface
    • High volume of large trucks and heavy equipment using narrow, winding road
  • Project anticipated through early July
  • Project website
South Boulder Road

South Boulder Road Reconstruction – Starts April 13, 2020

  • Concrete panel replacement on South Boulder Road (SBR) between Cherryvale Road and McCaslin Blvd.
  • Expect Delays – lane closures and shifts
  • 8 a.m. to 4:30 p.m. – Monday through Friday
  • Project anticipated to last through July
  • Project website
Road grading operations

Road Grading & Reclamation Operations

Seasonal gravel road grading operations are underway around the county. This year, several roads will be reclaimed to incorporate dust control material into the surface, which will create a stronger surface and helps dust control last longer. The following road will be reclaimed (dates are subject to change):

  • Ogallala to Diagonal Highway – May 21
  • Prospect to US 287 – May 26
  • Pike from N. 119th to East County Line Road – May 28
  • Quicksilver from North 119th to East County Line Road – June 2
  • North 115th from CO 52 to Lookout Road – June 3 and 4

Expect delays and please give operators room to work.

2020 Bridge Maintenance Program

Bridge repairs start April 27 at locations throughout the county

Expect lane closures and minor travel delays at the following bridges in Boulder County from late April into early June:

  • Spring Drive at Davidson Ditch – April 27 to 30
  • Brockway Drive at Goodhue Ditch – April 30 to May 4
  • Flagstaff Road above Gregory Canyon – May 4 to May 8
  • North 61st St. at Boulder Creek – May 8 to May 15
  • Palo Parkway at Four Mile Canyon Creek – May 15 to May 22
  • Nelson Road at Boulder Feeder Canal – May 22 to May 29
  • St. Vrain Road at Boulder Feeder Canal – May 29 to June 5
Culvert to be replaced at Six Mile Creek under Olde Stage Road

Olde Stage Road Reconstruction begins May 2020

  • Traffic signals in place 24/7 as road reduced to one lane in multiple locations to build retaining walls and replace culvert
  • Expect extended delays when equipment and supplies are being moved in the available travel lane
  • Working hours are 8 a.m. to 4:30 p.m., Monday through Friday, through August 2020
  • Information – Project Website, or contact Andrew Barth – email – 303-441-1032

Thank you for following restrictions! We apologize for any inconvenience.

For more information about Boulder County road travel impacts, please contact – Andrew Barth – 303-441-1032

Projects Impacting Cycling


  • NO BIKES in Fourmile Canyon from 8 a.m. to 4:30 p.m., Monday through Friday
  • Milling, grading, and paving operations are underway
  • Road is in less than ideal condition (gravel surface) 24/7
  • Expect work to last through June

OLDE STAGE ROAD – Gravel road surface in multiple locations – Traffic signals in place

  • Use caution when riding along Olde Stage Road as the road has been reduced to gravel in places
  • Two traffic signals in use. DO NOT RUN THE RED LIGHT
  • Expect work to last through August

Thank you for following restrictions! We apologize for any inconvenience.

Project Contact – Andrew Barth – 303-441-1032

Non-County Projects

Related Links

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Transportation Department

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2525 13th Street
Boulder, CO 80304

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Hours: 8 a.m. - 4:30 p.m. M-F

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P.O. Box 471
Boulder, CO 80306