Arkansas

I-48

The conceptual I-48 Interstate corrdor is the conversion of US 412 in Northern Arkansas. I-48 runs through Northwest Arkansas in Benton County, the route serves Siloam Springs as a major route through the southern part of the city. US 412 has a concurrency with Highway 59 that ends in east Siloam Springs. US 412 becomes four-lane and runs east to enter Washington County. US 412 crosses I-49/US 62/US 71 in Springdale, where the route is four-lane with a center left-turn lane. Hindsville was bypassed in 2009 with a four-lane alignment of US 412. US 412 continues east, winding through forested land. In Alpena, US 412 begins a concurrency with US 62 for approximately 150 miles through north central Arkansas. After the concurrency ends, US 412 runs due east to through downtown Walnut Ridge.

I-49, I-69

I-49 runs along western Arkansas from Texarkana to Ft Smith. I-69 runs across southeast Arkansas. The new I-555 Interstate corridor is shown to Jonesboro.

I-57

The new I-57 conversion of US 67 is show in Northeast Arkansas.

I-53

The conceptual I-53 Interstate corridor connects the exsting I-530 from Little Rock to Pine Bluff, the "I-69 Spur" AR 530 to Monticello, and finally the "I-69 Spur Extension" from Monticello to Monroe, Louisiana.

Missouri

I-48

I-48 continues to follow US 412 through Missouri on its Bootheel, and then runs concurrent with I-155 into Tennessee to terminate at the future I-69.

I-72

I-72 is extended from Illinois and Hannibal along US 36 to I-29 in St Joseph Missouri.

I-50, I-60 Trans America Highway

The I-50 Trans America Highway follows US 60 from I-55/I-57/US 60 interchange to I-44 in Springfield, and the I-60 Trans America Highway continues west from I-44 to I-49 north of Joplin into Kansas. West of Springfield, the Trans America Highway is designated as I-60 following a new terrain route far north of Joplin to connect to US 400 into Kansas.

Oklahoma

I-48

The High Priority US 412 Corridor is converted to I-48 from I-49 Fayetteville Arkansas to I-27 using the Cherokee and Cimarron Turnpikes.

I-27

I-27 continues north from Amarillo Texas through the panhandle into Colorado.