Business Loop I-40 - El Reno

The 8.6 mile long loop of Business I-40 through El Reno separates with I-40 at Exit 119 to overtake old U.S. 66/270 east to Sunset Drive. U.S. 81 overlaps with the business route from Choctaw Avenue, as the loop turns south one block to Wade Street and east two blocks to Rock Island Avenue.

Business Loop I-40/U.S. 81 (Rock Island Avenue) leave the El Reno street grid at Elm Avenue and curve southeast to SE 27th Street and Shepherd Avenue. There SH 66 begins east to Oklahoma City while U.S. 81 and the business route turn south to I-40 at Exit 125.