2010 New York Code
VAT - Vehicle & Traffic
Title 8 - RESPECTIVE POWERS OF STATE AND LOCAL AUTHORITIES
Article 39 - (1640 - 1646) REGULATION OF TRAFFIC BY CITIES AND VILLAGES
1644 - Special speed limits on bridges and other elevated structures in cities and villages.

§ 1644. Special  speed limits on bridges and other elevated structures
  in cities and villages. The legislative body of any city or village  may
  determine  the  maximum speed which may be maintained without structural
  damage on bridges and elevated structures in such city or  village,  and
  if  such  maximum  speed is lower than the maximum speed limit otherwise
  applicable, subject  to  the  limitations  imposed  by  section  sixteen
  hundred  eighty-four,  may  by  local  law,  ordinance,  order,  rule or
  regulation establish such lower maximum speed limits at  which  vehicles
  may proceed on such bridge or structure.