The largest and possibly longest project in the history of the Colorado Department of Transportation (CDOT) has begun. The rebuild of Interstate 270 will take seven years and cost $806 million.
I-270 connects Adams County with northeast Denver. It is the only interstate in Colorado that has not been upgraded since it was built in 1965. Plans include rebuilding overpasses, widening toll lanes, improving safety and adding new paths for pedestrians and cyclists.
The first phase will run from October 2026 to early 2030. It will include repairing embankments, raising the westbound roadway between 60th Avenue and the South Platte River trail, and rebuilding eight of the 12 overpasses in the worst condition. Later phases, including the rebuild of the Vasquez Boulevard interchange and the bridges at York Street and 56th Avenue, are scheduled to be finished in 2033.
CDOT does not expect major disruptions during the day. At night, from 9 p.m. to 5 a.m., one lane will be closed between the South Platte River and 60th Avenue. Current traffic information is available at COtrip.org.
Source: Denver7, CDOT
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