The New York, New Haven and Hartford Railroad (NYNH&H), the long-time operator of most South Station commuter trains, filed for bankruptcy for the last time in 1961. Two years earlier in 1959, the railroad had discontinued passenger service on the Old Colony division in southeastern Massachusetts. On July 28, 1965, the MBTA signed an agreement with the New Haven Railroad to purchase of the former Old Colony mainline from Fort Point Channel to South Braintree in order to construct a new rapid transit line along the corridor. The line was expected to be completed within two years. The agreement also provided for the MBTA to subsidize commuter service on the railroad's remaining commuter rail lines for annually.