The earliest predecessor to the Franklin Line began in 1835 when the Boston and Providence Railroad built a branch from Dedham to Readville, connecting with the main line from Boston to Providence. This was followed, in 1848, by the Norfolk County Railroad, which ran from Dedham to Walpole. After various mergers and acquisitions, the line become part of the New York and New England Railroad until 1898, the New York, New Haven and Hartford Railroad until 1968, and, ultimately, Penn Central until its 1970 bankruptcy.