Closures & Construction

Construction-Related Travel Impacts

Boulder County Public Works 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

US 287 & Isabelle Road Intersection Safety Improvements Project

  • Project Hours are 7 a.m. to 7 p.m., Monday through Saturday
  • Expect single-lane closures on Isabelle Road during working hours
  • Impacts to US 287
    • Daytime, weekday lane closures and traffic shifts on US 287
  • Expect delays – Alternate routes advised
  • Project anticipated to last until August 2021
  • Project Website

Chip seal operations have been postponed until next summer

  • The following roads will be chip sealed in 2022
    • Jay Road from 63rd to 75th street
    • Lookout Road from 75th to 115th street
    • Somerset Drive and Longview Road in Niwot
    • 73rd/75th Street from Niwot Road to CO 66

Learn more about the county’s chip seal program.

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

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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Public Works Department (formerly Transportation)

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2525 13th Street
Boulder, CO 80304

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

Mailing Address

P.O. Box 471
Boulder, CO 80306