CO 9 Widening from Iron Springs to Frisco

Work this Week

Oct. 3, 2021

Listed below are the traffic impacts and road work to expect next week (10/3 – 10/9).

Traffic Impacts:

  • For CO 9, northbound and southbound traffic will have left lane closures at Main St.
  • Granite St. will be open as needed.
  • There will be night work on Monday, Tuesday, and Wednesday for final paving operations.
    NB and SB right or left lane closures will be in place for paving operations.

Work Schedule:

  • Day time hours: Monday – Friday from 7:00am to 7:00pm.
  • Night work hours: Monday 10/4, Tuesday 10/5, and Wednesday 10/6 from 7:00pm to 7:00am.


  • Miner’s Creek Road is not a detour. Summit County Sheriff is writing tickets for vehicles using this route as a detour to bypass construction.
  • Miner’s Creek Road is not maintained by the County; the increased traffic has caused extremely poor road conditions.
  • Children are at play throughout the Bill’s Ranch community. For safety, all motorists are urged to avoid using this route.
  • Obey all posted construction signs and Variable Message Signs. Messages on VMS boards are occasionally changed and drivers need to stay alert for changing conditions.
  • Longest traffic delays are typically 10-15 minutes. Be patient and courteous to other drivers.
  • Swan Mountain Road can be used as an alternate route to traveling on CO-9 through Frisco.

About the Project

In May 2020, crews began widening CO 9 between MP 94.8 to 96.15 from Iron Springs to Frisco, Colorado, Summit County. The project includes:

  • Widening of CO 9 to four lanes
  • Installing noise walls along Water Dance and Frisco Bay Townhomes
  • Providing a pedestrian underpass between Peninsula Recreation Area and the County Commons
  • Building roundabouts at 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
  • Improving drainage throughout the corridor

This project is part of CDOT’s “Whole System. Whole Safety.” initiative aimed at enhancing safety for Colorado’s traveling public. The highway widening and intersection improvements will provide increased capacity, reduced travel times, as well as safer intersections and crossings for motorists and pedestrians.

For information on how to safely navigate a roundabout, please click:

Roundabout Driving Tips

We encourage the use of the Zipper Merge to improve traffic flow through the work zone.  Please click below for information on how to perform the Zipper Merge.

The Zipper Merge: Techniques to Keep Traffic Moving

Project Facts

  • Cost: $14 million
  • Contractor:  SEMA Construction
  • Timeline: May 2020 - October 2021
  • Location: CO 9 in Frisco, Colorado

CO 9 Widening from Iron Springs to Frisco

CO 9 Widening Project from Iron Springs to Frisco

Proposed Work Schedule

  • Construction will shut down for the winter from November 1, 2020 through May 1, 2021.
  • Work is scheduled to begin Monday, May 11 and be completed by mid-October 2021.

Planned Traffic Impacts

  • November 1, 2020 – May 1, 2021 - Crews mobilize and bring in equipment and set up work zone signage.