N.J. Stat. § 39:4-27
In the transportation of any such road building machinery, vehicle, traction engine, roller, structural unit incapable of dismemberment or other apparatus or machinery in accordance with the provisions of section 39:4-26 of this Title, such trailer or semitrailer shall be so loaded and operated as not to cause damage to the surface of any public road, street, highway, bridge or railroad crossing. When operated the gross weight of the combination of vehicle and load shall be limited to eight hundred pounds for each inch of width of the tires on all wheels.
Every permittee shall be responsible in money damages to the municipality, county, State Highway Commissioner or railroad company maintaining a highway, bridge or railroad crossing by reason of the failure of the permittee to comply with the statutes or posted regulations governing the use of the said highway, bridge or crossing or the rules and regulations governing the movement authorized under said permit.
N.J.S. § 39:4-27