the eastern (main) southbound pedestrian crossing is east of the northbound crossing, immediately south of the san ysidro trolley station. pedestrians pass through the 6.9-million-dollar, three-story puerta este méxico-san ysidro building, opened in august 2015, containing mexican passport control and customs which since late 2017 exits to a path leading to frontera street just southwest of ferrocarril street. prior to 2012 the southbound pedestrian crossing was west of the northbound vehicle crossing and exited to a bridge leading to plaza viva tijuana.