CO 9 Widening from Iron Springs to Frisco

Traffic Impacts

November 2020 – April 2021
  • Starting early November, the construction for this Phase is completed and in winter shut down until April 2021.

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 Dillon, 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.

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