New Jersey State Route 133 is an east-west highway by-passing the town of Hightstown in Mercer County. It runs from Mercer County Highway 571, to Interstate 95/New Jersey Turnpike. NJ St Rt 133 passes through the following town in Mercer County. Hightstown NJ St Rt 133 is not multi-plexed in Mercer County. NJ St Rt 133 intersects the following highways in Mercer County. U.S. Rt. 130, at Hightstown. New Jersey State Route 33, at Hightstown. Interstate 95, at Hightstown. New Jersey Turnpike, at Hightstown.