The Colorado Department of Transportation (CDOT) is currently constructing the I-70 Floyd Hill Project, from west of Evergreen to eastern Idaho Springs.
The I-70 Floyd Hill Project will:
● Add a third westbound I-70 travel lane in this two-lane bottleneck to improve travel time reliability. This new lane will be a full-time, tolled Express Lane from just west of Homestead Road (Exit 247) to Colorado Blvd./Idaho Springs (Exit 241).
● Change the alignment of I-70 from the middle of Floyd Hill to the Veterans Memorial Tunnels to straighten roadway curves, which will improve safety and sight distance.
● Rebuild bridges due to heavy usage and wear and tear.
● Add a two-mile section of frontage road between the US 6 and Hidden Valley/Central City Parkway interchanges, which will improve resiliency and emergency response.
● Move the current left-merge US 6 on-ramp to westbound I-70 to the Hidden Valley/Central City Parkway (Exit 243) interchange to improve safety and operations.
● Build an extended on-ramp from US 6 onto eastbound I-70 to give slow-moving vehicles more room to merge.
● Improve traffic flow at interchanges and intersections by adding roundabouts on US 40 at County Road 65 (Exit 248) and Homestead Road (Exit 247), and at the I-70 and Hidden Valley/Central City Parkway (Exit 243) interchange.
● Improve the Clear Creek Greenway trail and resurface it with concrete.
● Implement environmental mitigation to enhance wildlife connectivity, air and water quality, stream conditions and recreation.
● Install two permanent air quality monitors.
During construction, motorists will experience lane and ramp closures, along with rock scaling and blasting. Please note, 20-minute traffic holds are required intermittently throughout the Project through the end of 2026, resulting in up to 45-minute delays. Traffic holds will take place 9 a.m. to 3 p.m., Mondays through Thursdays, and 9 a.m. to noon, Fridays. Please plan accordingly and allow for additional travel time when visiting.
Construction on the I-70 Floyd Hill Project began in July 2023. Westbound I-70 will be in its new alignment by the end of 2027 and eastbound I-70 will be in its new alignment by the end of 2028, with the entire Project complete in 2029.
Stay informed by visiting the CDOT I-70 Floyd Hill Project page and sign up for alerts.