I-430 begins at an interchange southwest of Downtown Little Rock with I-30 and travels north to cross the Arkansas River and end at I-40.

Immediately after passing under Kanis Road, the highway has a cloverleaf interchange with I-630 at its western terminus.

After the bridge, the roadway passes Rosenbaum Lake and intersects with Highway 100 (Crystal Hill Road) before ending at a three-way interchange with I-40/US 65.

[2] Early plans for the Interstate Highway System include a route along roughly the same alignment as the present I-30 through the Little Rock area but are not detailed enough to show exactly how the cities would be served.

[3] Later, in 1955, a map of the Interstate Highway's plans shows a complete beltway around Little Rock, including present-day I-430 and I-440.