Closures & Construction

Boulder County Transportation manages the construction projects for roads, bridges, pathways, drainage improvements and trails. Below are the Boulder County road and trail projects currently under construction.

County Road Projects

  • Logan Mill Road closed on Wednesday, April 23
    • Logan Mill Road will be near the intersection with Four Mile Canyon Drive from 9 a.m to 3 p.m on Wednesday, April 23.
    • Closure necessary to prepare roadway/area for upcoming installation of a concrete box culvert at the Four Mile Creek crossing.
    • Arrangements have been made with Fourmile Fire Department for emergency response during the closure.
    • Work being completed by Boulder County Transportation Maintenance
    • Contact Andrew Barth at or call 303-441-1032 for more information.
  • Highway 119 Underpass at Airport Road
    • Work began April 22 and is anticipated to last until late December, weather permitting.
    • Travelers can expect minor delays during daytime working hours
    • Northbound 119 will be rerouted around the construction site with a reduced speed limit of 50 mph
    • Ogallala Road will be closed for the duration of the project
  • 51st Street Reconstruction, Jay Road to Boulder Reservoir -
    • Construction resumed March 31
      • Delayed due to 2013 flooding
    • Motorists can expect construction delays through this area
    • Project Contact = Tim Swope at

Regional Trail Projects

  • LOBO (Longmont to Boulder) Trail Repairs
    • Work to repair the flood damaged section of the LOBO Trail at Left Hand Creek upstream of 95th Street/Hover Street
    •  Scheduled to be bid in May 2014, and should last 2 to 3 weeks, weather dependent.
    • Project Contact = Dave Webster at

Other Construction within Boulder County

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