The St. Louis Post-Dispatch reports mail and boxes were found along southbound lanes of Interstates 270 and 55 Sunday morning.
U.S. Postal Inspector Dan Taylor says the mail fell out of the back of a truck that was taking the items to Memphis.
Taylor says the driver realized the rear door was open in St. Genevieve County and stopped. The situation was reported to the Missouri State Highway Patrol around 7:30 a.m.
A spokesman for the patrol says all of the mail was collected by around 10:30 a.m.
