Iowa/South Dakota State Line

I-29 north at the Big Sioux River. The Big Sioux River marks the state line between Iowa and South Dakota.

I-29 south approaching Exit 151 (Iowa) - IA-12/Riverside Blvd.

Welcome to Iowa on I-29 south in Sioux City.

I-29 North - Exit 1 (South Dakota) - Dakota Dunes. Approaching the South Dakota state line.

The People of Iowa Welcome You on I-29 south. At the end of the Big Sioux River bridge at the South Dakota - Iowa state line.

Welcome to South Dakota on I-29 north.