Future Interstate 42 Oklahoma and Arkansas

Springdale, AR near Perry, OK192.70 miles

Overview

AR 112 at AR 612 in Springdale
Looking west at the nearly completed stretch of AR 612 west from AR 112 in northwestern Springdale, Arkansas. 07/10/26

The Oklahoma Department of Transportation (ODOT) and Arkansas Department of Transportation (ARDOT) submitted applications to the American Association of State Highway and Transportation Officials (AASHTO) for the Fall 2023 Meeting of the Route Numbering Committee for the designation of Interstate 42. The route is established to follow U.S. 412 between I-35 in Noble County, OK and I-49 in Springdale, AR. The application referenced that the proposed route is 190 miles in Oklahoma, using the Cimarron Turnpike east toward Tulsa, and the Cherokee Turnpike east beyond Tulsa. The proposed 11 miles in Arkansas include Arkansas Route 612 along the Springdale Northern Bypass.

The premise behind numbering U.S. 412 as I-42 along this corridor relates to the similarity in numbers. However, with an already established Interstate 42 in North Carolina, AASHTO approved the application with condition. The numbering conveys that the two corridors may be joined at some point, which is not going to be the case. As such, both states withdrew their respective applications for further review.

Mileage by State

Oklahoma166.50 mi
Arkansas26.20 mi

Data Sources

October 6, 2023 ODOT AASHTO Application for Future I-42

Future East End Interstate 49 Arkansas Highway 612 ‐ Springdale, AR

Future/Proposed Alignment Gallery (Tap to Expand / Collapse Section)

Arkansas Highway 612 East at Interstate 49

AR 612 East at Interstate 49 in Springdale

AR 612 (Springdale Northern Bypass) concludes east at a directional T interchange with Interstate 49 along the Springdale and Lowell city line. 07/10/26

Interstate 49 North at Arkansas Highway 612

I-49 North at AR 612 West in Springdale

The proposed route of Interstate 42 commences west from I-49 north in Springdale. AR 612 will provide a bypass of U.S. 412 west through Elm Springs and Tonitown. 07/10/26

Interstate 49 South at Arkansas Highway 612

I-49 South at AR 612 West

Interstate 49 south at AR 612 (Springdale Northern Bypass) west. 10/07/21

Future West End Interstate 35 U.S. 64 U.S. 412 ‐ near Perry, OK

Future/Proposed Alignment Gallery (Tap to Expand / Collapse Section)

U.S. 412 West at Interstate 35 U.S. 64

US 412/Cimarron Tpk West at I-35 north to Wichita, KS

Interstate 35 heads north from U.S. 412 to the Kansas Turnpike and Wichita. U.S. 64 west combines with U.S. 412 to Enid from I-35 at Perry. 07/12/26

U.S. 64 U.S. 412 East at Interstate 35

US 64/412 East at IH 35 and the Cimarron Turnpike

Interstate 42 will begin east along U.S. 412 and the Cimarron Turnpike from IH 35/U.S. 64. 07/12/26

Updated August 14, 2026