There were also plans to run a New York City Subway line across the bridge in September 1909;; in a report submitted to the New York City Board of Estimate in June 1911, the Brooklyn Rapid Transit Company was to extend its Broadway Line onto the bridge. By December 1914, the Board of Estimate had abandoned the proposal, which would have required $2.6 million in modifications to the bridge and would have caused serious congestion. Instead, the board proposed the double-tracked 60th Street Tunnel under the East River, which would allow the city to save $500,000. The New York Public Service Commission approved the tunnel in July 1915.
There were also plans to run a New York City Subway line across the bridge in September 1909;; in a report submitted to the New York City Board of Estimate in June 1911, the Brooklyn Rapid Transit Company was to extend its Broadway Line onto the bridge. By December 1914, the Board of Estimate had abandoned the proposal, which would have required $2.6 million in modifications to the bridge and would have caused serious congestion. Instead, the board proposed the double-tracked 60th Street Tunnel under the East River, which would allow the city to save $500,000. The New York Public Service Commission approved the tunnel in July 1915