In March and April 2019 , as a result of the 2019 Midwestern U.S. floods , Interstate 29 was closed in both directions for approximately between St. Joseph and Omaha . Much of this section of I-29 , including at the Missouri-Iowa border , runs over or through a large floodplain for the Missouri and Platte Rivers . As such , multiple elevated sections of the highway collapsed and other sections were submerged or washed out by floodwaters . This was the largest closure of an Interstate Highway in terms of distance in the history of the Interstate Highway system . A signed detour was not officially designated in most areas , as the roads that would be used as detours are mostly rural farm roads that were also submerged by flooding ; along I-80 in Iowa , signs from east of Des Moines to the Nebraska line detoured traffic via I-35 from Des Moines to Kansas City . Additionally , U.S. Route 75 , paralleling I-29 on the other side of the Missouri River , was also closed in large sections for similar reasons
2019 Midwestern U.S. floods
2019 Midwestern U.S. floods
Interstate 29