New York Subway Extension Opens

August 22, 1904, saw the opening of an important extension of New York's first subway, running from 145th Street to 157th Street. Built by the Interborough Rapid Transit Company under chief engineer William Barclay Parsons, it used electric multiple-unit trains. This addition addressed overcrowding in growing neighborhoods and demonstrated advanced tunneling techniques beneath the city. The project connected to the original 1904 line, accelerating the subway's role in shaping New York City's development and inspiring similar systems worldwide.