Colorado’s $905 million I-70 Floyd Hill Project is halfway done, as work on four of the corridor’s eight miles comes to a close.
Major rock excavation is completed, and the project will soon enter the bridge and roadway construction phase. Since late last year, crews have constructed 15 bridge columns and erected 31 bridge beams, and motorists will see more visible bridge piers and decks go up on the new westbound I-70 alignment throughout 2026.
Work has also begun on the Hidden Valley/Central City Parkway interchange, which will occur in multiple phases with the first phase lasting through early 2027. Crews are building a 16-foot-tall noise wall along westbound I-70 in eastern Idaho Springs that will stretch 620 feet.
Workers have completed 211 rock blasts on the project and moved over 765,000 tons of material. More than 1,250 employees have contributed to the project, including 162 subcontractors.
In 2023, CDOT and Kraemer North America, based in Plain, Wisconsin, partnered to upgrade the safety and operation of eight miles of the Interstate 70 Mountain Corridor, the gateway to Colorado’s Rocky Mountains, between Evergreen and eastern Idaho Springs. The entire project is expected to be completed in 2029.
Powered byThe finished project will include a new wildlife safety system expected to reduce wildlife-vehicle collisions by 90% using two miles of fencing, seven wildlife escape ramps and deer guards. Crews will also add improved drainage systems for melting snow and new retaining walls on eastbound I-70 to help stabilize the slope.
