C-470 Express Lanes

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C-470 is a 26-mile, highway that runs along the southern and western flanks of the Denver metropolitan area, linking the intersection of I-25 and E-470 in the east, to the intersection of U.S. 36 and I-70 in the west. Along with E-470 and the Northwest Parkway, the route forms a partial circumferential highway around the Denver metro area. The C-470 Express Lanes project extends for nearly half the full highway, 12.5 miles from its eastern end at I-25 to Wadsworth Boulevard. It will improve mobility, safety, and infrastructure condition through addition of express toll lanes, reconstruction of the general purpose lanes, bridge widening and replacement, and other geometric and operational enhancements. The following elements are included: Two westbound Express Lanes (express toll lanes) constructed from I-25 to Colorado Boulevard, and one Express Lane from Colorado Boulevard to Wadsworth One eastbound Express Lane constructed along the length of the project, between I-25 and Wadsworth Boulevard Full reconstruction of existing pavement Westbound auxiliary lanes between ramps from University Boulevard to Platte Canyon Road/Chatfield Avenue and from Yosemite Street to Quebec Street On and off-ramp improvements Realignment of substandard curves Widening of existing bridges Replacement of the bridges over the South Platte River The Express Lanes will provide additional capacity and greater reliability along this congested corridor, which is projected to experience a 40 percent increase in volume by 2035. HPTE expects the project to provide up to 18 minutes in travel time savings for westbound trips from I-25 to Wadsworth Boulevard during morning peak and evening commute times. All drivers who choose to use the Express Lanes will be required pay the dynamically variable toll; there will be no free HOV option.

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