Missouri Secondary State Route W is a short east-west highway in Southeastern Marion County. This runs in Hannibal. It goes from U.S. Rt. 61/Missouri State Route 168 west out of Hannibal. MO Sec St Rt W passes through the following town in Marion County. Hannibal
MO Sec St Rt W is not multi-plexed in Marion County. MO Sec St Rt W intersects the following highways in Marion County. U.S. Rt. 61, at Hannibal.