New Jersey State Route 138 is an east-west highway in Eastern Monmouth County. It runs from Interstate 195/New Jersey State Route 34, near Squankum, to New Jersey State Route 35, near Lake Como. NJ St Rt 138 passes through the following town in Monmouth County. Lake Como NJ St Rt 138 is not multi-plexed in Monmouth County. NJ St Rt 138 intersects the following highways in Monmouth County. Interstate 195, near Squankum. New Jersey State Route 34, near Squankum. Garden State Parkway, near Squankum. New Jersey State Route 18, near Squankum. New Jersey State Route 35, near Lake Como.