The BRT did not run any elevated train through services from 1899 to 1901. Due to increased patronage after the opening of the Interborough Rapid Transit Company (IRT)'s first subway line, the Park Row station was rebuilt in 1906. In the early 20th century, there were plans for Brooklyn Bridge elevated trains to run underground to the BRT's proposed Chambers Street station in Manhattan, though the connection was never opened. The overpass across William Street was closed in 1913 to make way for the proposed connection. In 1929, the overpass was reopened after it became clear that the connection would not be built.