The Fitchburg Subdivision is a railroad line owned by CSX Transportation in the U.S. state of Massachusetts. The line runs from Fitchburg southeast to Framingham Center[1] along a former New York, New Haven and Hartford Railroad line. Its south end is at the Boston Subdivision; the MBTA's Framingham Secondary continues southeast from Framingham.[2] [3]
See main article: Agricultural Branch Railroad. The part from Fitchburg south to Pratt Junction (in Sterling) opened in 1850 as part of the Fitchburg and Worcester Railroad.[4] At the other end, the Boston and Worcester Railroad opened a branch from Framingham northwest to Framingham Center in 1849. The Agricultural Branch Railroad opened in 1855 from Framingham Center west to Northborough and in 1866 to Pratts Junction.[5] The entire line became part of the NYNH&H and Conrail through leases, mergers, and takeovers, and was assigned to CSX in the 1999 breakup of Conrail.