Work on CO 9 begins week of May 11

Travel Advisory

May 1, 2020 - Northwestern Colorado - Motorists can expect delays

SUMMIT COUNTY – The Colorado Department of Transportation, in cooperation with SEMA Construction, plans to begin construction on CO 9 near Frisco the week of May 11. Construction limits and traffic impacts are expected from Recreation Way to Main Street, which is approximately mile post (MP) 94.8 to 96.15. Motorists should expect up to 20 minute delays during construction. Speed limits during construction will be reduced to 35 mph.

This project will improve safety and access to CO 9 by widening the highway to four lanes, providing a pedestrian underpass between the Peninsula Recreation Area and the County Commons, installing noise walls along Water Dance and Frisco Bay Townhomes, building roundabouts at existing Water Dance Drive and 8th Avenue intersections, rebuilding the CO 9 southbound free right turn lane onto Main Street, replacing signals at Recreation Way and Main Street and drainage improvements throughout the corridor.

The highway widening and intersection improvements will provide increased capacity, reduced travel times, as well as safer intersections and crossings for motorists and pedestrians. Work is scheduled to begin Monday, May 11 and be completed by mid-October 2021. Construction will shut down from November 1, 2020 through May 1, 2021 for the winter season. SEMA Construction is the prime contractor for this project, which will complete the CO 9 corridor expansion to four lanes between Frisco and Breckenridge. 


  • Mid-May: crews mobilize and bring in equipment and set up work zone signage.

  • Late May: expect lane closures as crews begin preparation work at the pedestrian underpass.

  • April – August 2020: all traffic will be realigned to the current NB lanes of CO 9. Crews will work on the new SB lanes of CO 9 from Recreation Way to 8th Ave.

  • August – October 2020: all traffic will be realigned to the newly constructed SB lanes of CO 9. Crews will work on the new NB lanes of CO 9 from Recreation Way to 8th Avenue.

  • June – August 2020: anticipated travel impacts at Peak One Boulevard / Water Dance Drive intersection with CO 9 as crews begin work on the new roundabout.

  • November 1, 2020 – May 1, 2021: winter shut down, no work anticipated during this time.

  • Motorists should expect up to 20 minute delays during work periods.

  • General working hours are Monday – Thursday, 7 a.m. to 7 p.m. and Friday 7 a.m. to 12 p.m. (noon). 

  • Weekend and night construction are expected as well. Night work will be announced in advance.

  • Additional information will be issued prior to construction starting in May 2021.


More information about this project is available at: 

Safe transportation infrastructure is essential for emergency first responders and freight drivers as Colorado navigates the COVID-19 pandemic. With that in mind, road maintenance and construction continues on CDOT projects with social distancing and other health safety measures to reduce COVID-19 exposure on the worksite. The Colorado Department of Public Health and Environment announced guidelines for construction activities. The public is urged to join the campaign for #DoingMyPartCO by practicing social distancing, wearing face masks, staying at home when possible, and avoiding nonessential travel. With fewer vehicles on the roads, CDOT crews will be able to work more efficiently and safely.  



The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.

  • Stay Alert! Expect the unexpected.

  • Watch for workers. Drive with caution.

  • Don't change lanes unnecessarily.

  • Avoid using mobile devices such as phones while driving in work zones.

  • Turn on headlights so that workers and other drivers can see you.

  • Be especially alert at night while driving in work zones.

  • Expect delays, especially during peak travel times.

  • Allow ample space between you and the car in front of you.

  • Anticipate lane shifts and merge when directed to do so.

  • Be patient!


In early 2019, CDOT announced its Whole System — Whole Safety initiative to heighten safety awareness. This initiative takes a systematic, statewide approach to safety combining the benefits of CDOT’s programs that address driving behaviors, our built environment and the organization's operations. The goal is to improve the safety of Colorado’s transportation network by reducing the rate and severity of crashes and improving the safety of all transportation modes. The program has one simple mission—to get everyone home safely.


CDOT has approximately 3,000 employees located throughout Colorado, and manages more than 23,000 lane miles of highway and 3,429 bridges. CDOT also manages grant partnerships with a range of other agencies, including metropolitan planning organizations, local governments and airports. It also administers Bustang, the state-owned and operated inter-regional express service. Governor Jared Polis has charged CDOT to further build on the state’s multimodal mobility options.