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Highway Closures and Impacts

The I-70 Floyd Hill Project will improve eight miles of the I-70 mountain corridor, from west of Evergreen to eastern Idaho Springs. The Project will deliver a third westbound I-70 travel lane, which will function as an Express Lane, to improve the current two-lane bottleneck. Other major elements include constructing a missing two-mile section of the frontage road between Evergreen and Idaho Springs, building an eastbound I-70 extended on-ramp for slow-moving vehicles, improving traffic flow and access at interchanges and intersections within the project limits, improving sight distance on roadway curves, improving the Clear Creek Greenway trail, and implementing environmental mitigation to create safer wildlife movements and improve air and water quality, stream conditions and recreation.

Construction began in July 2023 and is expected to conclude in late 2028.

Check out the January 2025 press release on progress in 2024 and plans in 2025.

Project Contact Information

For additional information about this Project:

Road Conditions: COtrip.org 
COtrip Planner App: bit.ly/COtripapp
Project Travel Alerts: bit.ly/COnewsalerts
Lane Closures: bit.ly/laneclosures

Gilpin County School District Capital Construction Project - Restarting March 24, 2025

Gilpin County School District will construct a sewer pipe from the school, 10595 Colorado Highway 119, to the Black Hawk Central City Sanitation District. The connection point is at the Black Hawk Fire Station, 7457 Black Hawk Blvd, Colorado Highway 119.

Colorado Highway 119 will be excavated in the northbound lane to construct the sewer pipe. Phase I construction began in the northbound lane of Colorado Highway 119 at the Black Hawk Fire Station and proceeded north to the Hidden Treasure parking area between August and November 2024.

Phase 2 construction will begin between the overflow parking area and the Hidden Treasure parking area starting on March 24, 2025.

One lane traffic will occur during construction, from March 24, 2025 through November 2025. During this period:

  • Expect delays of approximately 5 minutes.
  • One lane traffic will occur for approximately 3000 feet.
  • Automatic “red/green” traffic light controllers will be in use 24 hours a day/7 days a week.

For additional information, contact ESCO Construction Project Manager Kyle Griffin, kgriffin@escomailbox.com. Check the Gilpin School District website for up-to-date information on this project.

The on-site wastewater treatment plant groundwater discharge has been non-compliant for more than a decade. After a feasibility study, the Board of Education determined the best use of taxpayer revenue was to construct a sewer pipe and connect the school facility with the Black Hawk Central City Sanitation District.

US Hwy 6 single lane closures in Clear Creek Canyon between Hwy 119 and Hwy 93/58. Full closure of the canyon is planned for week of April 20, 2025 starting at 9:00 p.m. on Sunday, April 20. It will reopen by 7:00 p.m. on Saturday, April 26. A weather decision will be made before starting work so the timeline could be pushed back to start on Sunday, April 27. 

During the week-long closure, the I-70 Floyd Hill Project will not conduct any rock blasting or scaling holds.  

Stay Informed:

You can use these resources from Jefferson County to stay informed on the project and planned closures:

Sign up for Jeffco "Notifyme" alerts:

  • Visit the Jeffco Notifyme page.
  • Add your email address to the top and click sign in.
  • You can opt to receive emails and / or text messages.
  • Scroll down to the third section titled "Alerts" and find P2P/US Hwy 6 - Trail Construction Closures.

You are also encouraged to check COtrip.org for real-time lane closures and traffic impacts associated with area projects.