New Jersey State Route 175 is a short north-south highway in Mercer County. This runs north of the Trenton area on an old alignment of New Jersey State Route 29. It starts and ends at NJ St Rt 29. NJ St Rt 175 passes through the following towns in Mercer County. Trenton Ewing NJ St Rt 175 is not multi-plexed in Mercer County. NJ St Rt 175 intersects the following highways in Mercer County. New Jersey State Route 29, at Trenton. Interstate 295, at Ewing. New Jersey State Route 29, at Ewing.
