Due to flash flooding, the Missouri Department of Transportation (MoDOT) announced a full closure of I-29 is in place until further notice. 
The closure is at the Iowa border and Exit 56 (US 71 & 59) at St. Joseph. The duration of this flood event is unknown, but will last through the night.
Those who would normally use I-29 as a through route should instead use:
I-35 N from Kansas City to
I-80 West in Des Moines to
I-29 at Sioux City, South Dakota
OR
US 71 into Iowa
and vice-versa until further notice.
MoDOT is urging drivers to NOT follow local traffic past the closure point at US 71. There are no good alternative trucking routes north of US 71 – especially to points west. Flooding is widespread.
This detour is subject to change with little notice, so please check your route before traveling.
Travelers already on I-29 North
Drivers who join I-29 north of Kansas City can take US 71 North of St. Joseph and connect to I-35 via multiple connecting highways. Refer to the Traveler Information Map for up to date travel information.
Please do not assume that a highway that is clear of flooding in Missouri will be clear in Iowa, Kansas or Nebraska. Check other states’ routes as well as Missouri’s.
Find road conditions information for all of Missouri’s bordering states at https://www.modot.org/road-conditions-missouris-surrounding-states.
Find the locations of Missouri highway closures using the MoDOT Traveler Information Map at https://traveler.modot.org/map/.
Road Conditions for Surrounding States
Below are links to weather-related Road Conditions maps and the toll free hotlines for states surrounding Missouri. Although MoDOT does not update or maintain these maps, links are being provided as a service to Missouri motorists.
Arkansas 501-569-2374
Illinois 1-800-452-4368
Iowa 1-800-288-1047
Kansas 1-785-296-3566
Kentucky 1-866-737-3767
Nebraska 1-800-906-9069
Tennessee 1-877-244-0065
Oklahoma 1-844-4OK-HWYS (1-844-465-4997)