Interstate 25 History
Interstate Construction Completed
I-25 construction was finished in Colorado on Sept. 21, 1969, with the opening of a 21-mile segment south of Walsenburg ( Rugby area). Total length of I-25 in CO: 299 miles
Cost: $125 million
Segment |
Location/Description |
Completion |
Denver |
11.2 miles, Valley Highway |
48 th Ave. to Evans, Fully opened 1958 |
Pueblo |
9.2 miles through Pueblo |
Opened July 1, 1959 |
Colorado Spgs. |
12 miles through the city |
Opened July 1, 1960 |
South of Pueblo to Monument |
67 miles, south of Pueblo to north of Colorado Springs |
Opened by 1961 |
Denver Northside |
N. end of Valley to 58 th , .5 miles |
Opened in 1961 |
Longmont Area |
SH 7 to SH 66, 14 miles |
Opened in 1961 |
Trinidad |
Elevated portion, approx. 3 mi. |
Completed in 1963 |
Castle Rock to Denver |
Approximately 25 miles |
Completed in 1963 |
Denver north |
58 th Ave. to SH 7, 14 miles |
Completed in 1963 |
North of Denver |
SH 66 to U.S. 34, 14 miles |
Completed in 1963 |
Walsenburg |
Walsenburg Bypass |
Completed in 1964 |
North Link |
17 miles, N of Wellington ( Buckeye Road ) to Border |
Completed Oct. 11, 1966 |
Colorado City |
SH 165 to Pueblo Blvd. , 20 miles |
Completed in 1965 |
Monument Hill |
Monument to Larkspur, 12 miles |
Completed in 1965 |
Ft. Collins Area |
U.S. 34 to SH 68 (Harmony), 8 mi. |
Completed in 1965 |
Trinidad/Raton Pass |
S. edge of Trinidad to Raton Pass at New Mexico Line – 13 mi. |
Completed in 1966 |
Walsenburg to Colorado City |
22 miles |
Completed in 1968 |
Larkspur to Castle Rock |
9 miles |
Completed in 1968 |
SH 68 to North of Wellington |
Harmony Rd. Ft. Collins to Buckeye Road , 23 miles |
Completed in 1968; I-25 continuous from Walsenburg to Colorado/Wyoming border |
Trinidad to Walsenburg |
21 mile segment |
Completed in 1969; I-25 in Colorado complete |