Interstate 25 Between Colorado Springs and Castle Rock, Colorado
In the U.S. state of Colorado, Interstate 25 follows the north–south corridor through Colorado Springs and Denver. The highway enters the state form the North near Carr and exits the state near Starkville. The highway also runs through the cities of Fort Collins, Loveland, and Pueblo. The route is concurrent with U.S. Highway 87 through the entire length of the state. I-25 replaced U.S. Highway 87 and most of U.S. Highway 85 for through traffic.
I-25 leaves El Paso County and enters Douglas County at Monument Hill, elevation 7,352 feet, north of Monument. I-25 then continues north through more rural and hilly areas areas east of the Rocky Mountains until reaching Castle Rock at exit 181. I-25 continues through rural and hilly portions of Douglas County until interchanging with E-470, the partial beltway of Denver as the toll road serves the Centennial Airport and the much larger Denver International Airport.
After entering Arapahoe County, I-25 cuts through the Denver Technological Center (DTC) between Dry Creek Road and Belleview Avenue (exits 196-199). I-25 enters Denver at the I-225 interchange, a spur that detours motorists to I-70 through Aurora, at exit 200. I-25 turns in an westerly direction between Evans Avenue (Exit 203) and Colorado Boulevard (Exit 204). University of Denver lies just to the south of the interstate at Exit 205. It then turns back north after Exit 207. I-25 curves around the west side of downtown Denver, where it can be accessed by I-70 Bus. at exit 210. I-25 then interchanges with I-70 at exit 214 right before leaving the City and County of Denver.