I-70 Floyd Hill bridge work ramps up with two overnight westbound I-70 closures next week

Travel Advisory

Dec. 9, 2025 - Denver Metro/Central Colorado - Motorists can detour using US 6 (Exit 244) off- and on-ramps

Clear Creek County — Major bridge construction advances on the Colorado Department of Transportation’s I-70 Floyd Hill Project in mid-December, requiring two overnight closures of westbound Interstate 70 between the US 6 (Exit 244) off- and on-ramps near Idaho Springs. Crews will build a temporary framework to support the upcoming construction of a concrete cast-in-place segmental bridge over live traffic on I-70. Once complete, the segmental bridge will carry westbound I-70 in a new alignment that will improve both safety and operations on this vital stretch of highway.

Rendering of the completed I-70 Floyd Hill Project alignment looking southwest, with westbound I-70 braiding over eastbound I-70 at the bottom of Floyd Hill and the new US 6 frontage road that connects to Hidden Valley/Central City Parkway (Exit 243) interchange.
Rendering of the completed I-70 Floyd Hill Project alignment looking southwest, with westbound I-70 braiding over eastbound I-70 at the bottom of Floyd Hill and the new US 6 frontage road that connects to Hidden Valley/Central City Parkway (Exit 243) interchange. The new westbound I-70 viaduct will be a concrete cast-in-place segmental bridge.

Traffic Impacts:

Westbound I-70 closure details

Crews will require two overnight full closures of westbound I-70 between the US 6 (Exit 244) off- and on-ramps.

  • 9 p.m., Monday, Dec. 15, to 5 a.m., Tuesday, Dec. 16
  • 9 p.m., Tuesday, Dec. 16, to 5 a.m., Wednesday, Dec. 17

Detour: Westbound I-70 traffic will merge into one lane and exit at the US 6 (Exit 244) off-ramp, and then turn left to access the US 6 (Exit 244) on-ramp to return to westbound I-70. Flaggers and uniformed traffic control will be at the interchange to direct traffic.

Map of westbound I-70 closure at US 6. Westbound I-70 traffic will merge into one lane and exit at the US 6 (Exit 244) off-ramp, and then turn left to access the US 6 (Exit 244) on-ramp to return to westbound I-70.
Westbound I-70 traffic will merge into one lane and exit at the US 6 (Exit 244) off-ramp, and then turn left to access the US 6 (Exit 244) on-ramp to return to westbound I-70.


All work is weather-dependent and subject to change. If weather impacts this work, crews will shift the construction schedule and closures could occur on Wednesday, Dec. 17, and Thursday, Dec. 18, from 9 p.m. to 5 a.m. Stay informed by signing up for text alerts by texting floydhill (one word) to 21000.

Upcoming holiday travel hours

As holiday travel increases, the I-70 Floyd Hill Project is committed to keeping I-70 moving. There will be no planned traffic impacts related to the I-70 Floyd Hill Project on eastbound and westbound I-70 the following dates:

  • 6 a.m., Saturday, Dec. 20, through 6 a.m., Monday, Jan. 5, 2026

Project Information

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 creating safer wildlife movements.

Construction began in July 2023. I-70 will be in its new alignment in 2028, with the entire project expected to conclude in 2029.

For additional information about this project:

Know Before You Go

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

Remember: Slow For The Cone Zone

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!

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