Missouri River bridge traffic was tied up for about 50 minutes after a St. Charles resident ran out of gas, triggering a three-vehicle wreck.
Two people had minor injuries.
The incident occurred at about 11:56 a.m. on the westbound lane of the bridge.
Jefferson City police said a Lincoln Town Car driven by Patricia A. Bratcher, 31, St. Charles, ran out of gas in the driving lane.
A GMC Envoy driven by Michael Williams, 48, Jefferson City, stopped suddenly and a Ford van driven by Theodore V. Cox, 34, Jefferson City, then struck the back of Williams' vehicle, pushing it into the center lane.
A ladder from the top of Cox's van slid off and struck the back of the Bratcher's vehicle. Williams and passenger Cherita D. Williams, 45, Jefferson City, were taken to a local hospital for treatment of minor injuries.
Everyone involved wore seat belts, police said.