U.S. Federal Route 9 is a north-south highway in Central Monmouth County. It runs from the Ocean/Monmouth County Line, near Lakewood, to the Monmouth/Middlesex County Line, near Spring Valley. U.S. Rt. 9 passes through the following towns in Monmouth County. Adelphia West Freehold Freehold Morganville U.S. Rt. 9 is not multi-plexed in Monmouth County. U.S. Rt. 9 intersects the following highways in Monmouth County. Interstate 195, near Freehold.