The Atlantic City–Brigantine Connector (officially the Atlantic City Expressway Connector; also known as the Atlantic City Connector or Brigantine Connector) is a connector freeway in Atlantic City, New Jersey, United States. It is a 2.37-mile (3.81 km) extension of the Atlantic City Expressway, connecting it to Route 87, which leads into Brigantine via the Marina district of Atlantic City. Locally, the freeway is known as "the Tunnel", due to the tunnel along its route that passes underneath the Westside neighborhood. The connector is a state highway owned and operated by the South Jersey Transportation Authority (SJTA); it has an unsigned designation of Route 446X.