Missouri Secondary State Route E is a north-south highway in Central Saline County. It runs from Missouri State Route 41, near Marshall, south to Missouri Secondary State Route H, near Napton. MO Sec St Rt E passes through the following town in Saline County. Napton MO Sec St Rt E is not multi-plexed in Saline County. MO Sec St Rt E intersects the following highways in Saline County. Missouri State Route 41, near Marshall.