New Jersey Statutes Title 27. Highways 27 § 13A-6

Upon his approval of any application, the commissioner shall notify the board of chosen freeholders of the county or the governing body of the municipality, as the case may be, that the road described in the application has been designated as a State aid road and has been included in the State aid road system. Upon such notification, the commissioner shall enter into a written agreement with the county or municipality which shall specify the scope and responsibilities for the necessary planning, surveys and engineering and for the actual work and inspection thereof. Such agreement shall be limited to construction, reconstruction or improvement and activities incidental thereto, and shall not include the costs of maintenance, repair or any other activity not incidental to construction, reconstruction or improvement.