Interstate 29 in the North Sioux City, SD area has been temporarily closed due to Big Sioux River flooding and work to divert the water. During the I-29 closure, motorists intending to head south of Sioux City on I-29 to Omaha and Eppley Airfield are instructed to take the alternative route(s) below for traffic detour on local roads.

Interstate through traffic detour on local roads:

  • Southbound I-29 traffic in South Dakota will be detoured onto SD 50 West at Exit 26 to Vermillion, then south to SD 19 into Nebraska where it becomes Highway 15, then continue south to Highway 12 east in Nebraska to U.S 20 east in Nebraska, then to Exit 1A for I-29 south at South Sioux City, NE.
  • Northbound I-29 traffic will exit onto Highway 20 west, then north on Highway 12 and Highway 15 in Nebraska, continuing onto Highway 19 in South Dakota to the Vermillion Exit to SD 50 eastbound to I-29.

Through traffic on Interstate 29 will be detoured as follows:

  • Southbound I-29 Interstate traffic will be detoured onto I-90 east at Exit 84A at Sioux Falls, SD, then south on I-35 Exit 159A at Des Moines, IA, then west on I-80 at Exit 137A to Council Bluffs, IA, then to I-29 south.
  • Northbound I-29 Interstate traffic will be detoured at Council Bluffs, IA onto I-80 eastbound, then north on I-35 in Iowa to Albert Lea, MN and west on I-90 to Sioux Falls.