I-70 Floyd Hill Project Update
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Heads Up! Construction in the West Section of the Project, between Idaho Springs (Exit 241) and the Hidden Valley/Central City Parkway Interchange (Exit 243), is set to begin in mid-March. Motorists will start to see crews mobilize in the area and set up advanced warning signage next week (weather dependent).
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I-70 Mobile Lane Closures
- Overnight mobile single lane closures on eastbound and westbound I-70 between Idaho Springs/Stanley Road (Exit 239) and Hidden Valley (Exit 243) to install construction signage in the West Section of the Project.
- Eastbound I-70:
- 9 p.m. to 6 a.m., Sunday, March 10
- 7 p.m. to 6 a.m., Monday, March 11, through Wednesday, March 13
- 7 p.m. to 6 a.m., Thursday, March 14
- Westbound I-70:
- 6 p.m. to 6 a.m., Sunday, March 10
- 7 p.m. to 6 a.m., Monday, March 11, through Wednesday, March 13
- 8 p.m. to 5 a.m., Thursday, March 14
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Upcoming Traffic Impacts
Motorists will see increased work through the corridor as construction in the West Section begins. In the West Section, traffic on eastbound and westbound I-70 will be shifted toward the outside shoulders so crews can work in the median. In addition to overnight lane closures, motorists can expect narrower lanes and shoulders and reduced speed limits through the work zone.
In late March, crews will shift westbound I-70 traffic to the south toward the median in the East Section of the Project between County Road 65/Beaver Brook (Exit 248) and east of the US 6 interchange (Exit 244), resulting in narrower lanes and shoulders. Eastbound I-70 will remain in its current alignment.
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Genesee Wildlife Crossing
Eastbound and westbound I-70 between Genesee (Exit 254) and Mile Point 255 - Expect daytime single left lane closures on eastbound and westbound I-70, 10 a.m. to 3 p.m., Monday, March 11, through Thursday, March 14. To learn more about the Genesee Wildlife Crossing project, visit the project website here.
US 40 & Floyd Hill Roundabouts
US 40 east of County Road 65 - The full closure of US 40 east of County Road 65 has been extended until 5 p.m., Friday, March 15 due to weather. The closure will not impact the I-70 and CR 65 (Exit 248) interchange. This closure is necessary for crews to install curb, gutter and guardrail, remove asphalt, and pave the detour and roadway for the roundabout at US 40 and CR 65. Motorists should detour using I-70. To learn more about the US 40 & Floyd Hill Roundabouts project, visit the project website here.
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Clear Creek Greenway Trail Closure
The Clear Creek Greenway trail remains closed between the US 6 (Exit 244) and Hidden Valley (Exit 243) interchanges for construction and utility work in this area. This work is scheduled to last until spring 2024, but trail users can expect ongoing trail impacts and closures through the end of 2027. This one-mile portion of the trail will be an active construction zone and will be unsafe for multi-use travel. Other segments of the trail will remain open.
There is currently no alternative route for this trail closure. The Project is actively working on solutions for alternative trail access through 2026. Please plan ahead and continue to check this webpage prior to Clear Creek Greenway Trail use. For up-to-date information, visit bit.ly/ccgreenway.
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Caption: The Clear Creek Greenway Trail is closed from US 6 (Exit 244) to Hidden Valley/Central City (Exit 243). There is an alternate parking location and access to open trail at Game Check Station Trailhead and Park.
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CDOT launches variable speed lmit sign technology on eastbound I-70 between Georgetown and Idaho Springs
Variable speed limit (VSL) signs on a ten-mile stretch of eastbound I-70 between Georgetown and Idaho Springs will go live on Tuesday, March 12. A variable speed limit sign is an electronic version of a regular speed limit sign with an LED display of the regulatory speed limit number (i.e. the enforceable speed limit) which can be changed to best suit conditions on the highway.
The signs incorporate new technology that automatically adjusts the speed limit based on congestion, traffic conditions and adverse weather such as a snowstorm and icy roads. Posting the appropriate speed limit in real-time will help prevent crashes at higher speeds, reduce the chances of secondary crashes and improve traffic flow through the corridor.
It’s important to note the speed limit will not change all the time, ONLY when there are bad weather conditions or congestion that warrant a change. One example is if there is a crash ahead on the highway, the variable speed limit signs can be changed to slow traffic down before reaching the back of the traffic queue to reduce the chances of a secondary crash. Similarly, if there is a snowstorm on the corridor that may cause slick conditions, the speed limit will be lowered to slow drivers down.
The speed limit posted on VSLs is the enforceable speed limit and is not a recommended or suggested speed limit. This means that a driver traveling at speeds greater than what is posted can be ticketed for speeding.
For more information, please go to the project web page.
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I-70 Floyd Hill Deconstructed Video Series
The I-70 Floyd Hill Project recently launched a new video series called “I-70 Floyd Hill Deconstructed.” This video series provides an inside look at the various construction activities required to build a project of this magnitude and meet the people who make it possible.
Click on the links below to watch videos from the I-70 Floyd Hill Deconstructed series.
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I-70 Mountain Corridor-Wide Traffic Impacts
- Reduced speed limits as low as 45 MPH, narrower lanes and shoulders, and increased truck traffic entering and exiting the work zones. Heed the speed limit, do not follow trucks into the work zone, go slow for the cone zone and do not drive distracted.
- All construction activities are weather-dependent and subject to change. For real-time travel information, visit COTrip.org.
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About the Project
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.
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