N.J. Stat. § 27:19-37.1
Whenever any county bridge commission, created pursuant to article 2 of chapter 19 of Title 27 of the Revised Statutes or any supplement thereto has or shall have paid the principal and interest on all its outstanding indebtedness and has or shall have on hand capital funds, derived from sources other than toll revenues in excess of the amount determined by such commission to be required for maintenance, repair, operation, reconstruction, replacement and modernization and improvement of the bridge or bridges under its control, and the approaches thereto, together with all other necessary expenditures of said commission, the commission may, by resolution, determine that such capital funds are surplus and provide for the payment of all or any part thereof to the county treasurer of the county for the use of the county.
N.J.S. § 27:19-37.1