When was Denver's Valley Highway created, and where did it run from and to? When did it cease to exist? When were I-25 and I-70 built? -- Jerry, Aurora.jpg)
The Valley Highway has never truly gone out of existence. The stretch of what is now I-25 through the heart of Denver still is known as the Valley Highway (or just the Valley) to long-time residents, though it formally became part of the Interstate highway system in 1961.
When it opened in 1958, it ran 11.2 miles, from 48th Avenue on the north to Evans Avenue on the south, according to the Colorado Department of Transportation. The Valley tag came from its location in the South Platte Valley.
The last Colorado leg of I-25, a 21-mile segment from Trinidad to Walsenburg, was finished in 1969.
The first section of I-70, 14 miles from the Kansas state line to Burlington, was completed in 1969, says CDOT. The sections through the Denver metro area were finished by 1970, and the last leg, a 12-mile engineering marvel through Glenwood Canyon, wasn't finished until 1992.
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