The Transit Authority and politicians pressured the New York State Department of Transportation to resume N train service on the bridge's south side on September 30, 1990, despite warnings from engineers that the structure was unsafe and major repairs still had to be made. Trains ran express on Broadway in Manhattan (stopping at 49th Street) and Fourth Avenue in Brooklyn at all times except late nights. On December 27, state inspectors forced N service to be rerouted via the Montague Street Tunnel again after discovery of corroded support beams and missing steel plates, running local on its entire route at all times.