U.S. Federal Route 34 is a east-west highway in Central Warren County. This is a two-lane road from the Henderson/Warren County Line to Monmouth. From Monmouth to the Knox/Warren County Line it is a four lane highway. U.S. Rt. 34 passes through the follow town in Warren County. Monmouth
U.S. Rt. 34 is multi-plexed in Warren County. U.S. Rt. 67, near Monmouth.