Business Loop I-25 - Casper




Business Loop I-25 follows a combination of U.S. 20-26-87 Business through the city of Casper. The route partitions at the south end with the northbound direction departing from I-25 at Exit 186 to Beverly Street south to Yellowstone Highway west. The southbound direction travels wholly along Yellowstone Highway east to its direct on-ramp with I-25.
Yellowstone Highway angles Business Loop I-25 & U.S. 20-26-87 Business southwest from C Street to 1st Street. 1st Street continues the four routes west to Center Street in Downtown Casper. There Business Loop I-25 & U.S. 87 Business turn north onto Center Street for the return to I-25. Locally maintained by the city of Casper, Center Street is former Wyoming 255.
Similar to the other end, the north end of Business Loop I-25 separates traffic northbound onto F Street, a freeway frontage road, west across the North Platte River to the on-ramp at Poplar Street (WYO 220). Business Loop I-25 south joins Center Street directly from the off-ramp at Exit 188A.
Signed Route | Milepost Number | Description | State Control Route | Distance | Overall Mileage |
---|---|---|---|---|---|
![]() ![]() ![]() ![]() |
0.05 | Junction ![]() ![]() ![]() ![]() Begin ![]() |
34 | 0.00 | 0.00 |
0.05 | Bypass ![]() ![]() ![]() ![]() |
34 | 0.00 | 0.00 | |
0.11 | 0.11BK=0.10AH | 34 | 0.06 | 0.06 | |
0.11 | East City Limits Casper | 34 | 0.01 | 0.07 | |
0.69 | Railroad at-grade crossing | 34 | 0.58 | 0.65 | |
1.63 | Junction ![]() |
34 | 0.94 | 1.59 | |
![]() ![]() ![]() |
1.70/0.17 | Junction ![]() ![]() ![]() ![]() ![]() |
34/SH 255 | 0.07 | 1.66 |
0.44 | Burlington Northern Railroad Separation | SH 255 | 0.27 | 1.93 | |
0.65 | Junction ![]() |
SH 255 | 0.21 | 2.14 | |
0.65 | End ![]() ![]() ![]() |
SH 255 | 0.00 | 2.14 |


Center Street (Business Loop I-25 & U.S. 87 Business) passes by the Natrona County Courthouse and intersects B Street on the north side of Downtown Casper.
09/01/04
Beyond C Street, Business Loop I-25 narrows to two lanes through the subway below the BNSF Railroad line.
09/01/04
A split diamond interchange connects Interstate 25 & U.S. 20-26-87 with Business Loop I-25 (Center Street) at E and F Streets. An on-ramp joins the freeway south toward Cheyenne from E Street nearby.
09/01/04
Business Loop I-25 & U.S. 87 Business turn west onto the frontage road (West F Street) to span the North Platte River.
09/01/04
Photo Credits:
- Andy Field: 09/01/04
Connect with:
Page Updated Sunday May 27, 2012.