In 1886, the Suburban Rapid Transit Company commenced operations with a railway line over the Harlem River (via a double-decked swing bridge located between the Third Avenue Bridge and Willis Avenue Bridge with the upper deck carrying the express tracks, the lower one the local tracks, and a pedestrian walkway) from the Manhattan Railway's northern terminal at 129th Street to 133rd Street in the southern Bronx, known then as the "Annexed District".