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Interstate 270

Interstate 270 (I-270) is a 7-mile (11 km) long highway in the northeastern part of the Denver–Aurora Metropolitan Area in the U.S. state of Colorado. It overlaps U.S. Highway 36 (US 36) for its entire length. The western terminus of I-270 is at the interchange with I-25 and US 36. It heads eastward to an interchange with I-76, where the mileposts reset because of a previous freeway extension. The freeway heads southeast and comes to meet Vasquez Boulevard, where it enters Commerce City. The road crosses Quebec Street before ending at I-70.

Ground was broken on the first segment of I-270 in 1965, and the freeway was completed three years later, stretching from I-70 to Vasquez Boulevard. The road was then extended to I-76 two years later. The section between I-25 and I-76 was completed in 1999. Since completion, this section has undergone much construction to renew bridges over Clear Creek and Washington Street. Because the western end of I-270 is close to the junction of I-25 and I-76, some traffic movements to I-25 can only be made by using I-76.

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