The Wildcat Branch on a circa-2007 MBTA map at Back Bay
The Wildcat Branch is a single track railroad branch line which connects the MBTA Lowell Line in Wilmington, Massachusetts to the MBTA Haverhill Line at Wilmington Junction. The total length of the branch line from the connection with the Lowell Line to the merge with the Haverhill Line is 2.88 miles. It was operated from 1836 to 1848, then rebuilt in 1874, and has been used since.
The branch's name is in reference to Wilmington's high school mascot, the Wildcats. The entire length of the current branch line is within the town of Wilmington.
The Boston and Lowell Railroad was chartered on June 5, 1830 and opened between its namesake cities on June 24, 1835. On March 15, 1833, while the B&L was under construction, the Andover and Wilmington Railroad was incorporated to build a branch line from Wilmington to Andover. The A&W opened on August 8, 1836; it became the Andover & Haverhill Railroad which was quickly merged into the nascent Boston and Maine Railroad. By 1843 the B&M ran from Wilmington to Portland, Maine; however, it was still dependent on the B&L to reach Boston. The B&M opened a new route (the Western Route) from Wilmington Junction (three miles north of Wilmington) to Boston via Reading in July 1845, thus negating the need for the original line between Wilmington and Wilmington Junction. The B&L operated the line for three years; its abandonment in 1848 was the first railroad abandonment in New England.
In 1874, the B&L rebuilt the line; some sections are on the original grade, while others are slightly west. Rather than connecting to the B&M mainline, this Wilmington Branch paralleled the Western Route to a new Wilmington Junction station at the junction with the Salem and Lowell Branch. This gave the B&L a route to Lowell via the S&L and the Lowell and Lawrence Railroad. The B&L was merged into the B&M at the end of the 19th century. Passenger service on the S&L was abandoned west of Wilmington Junction in 1924 and east of it in 1932, but the branch was used to run some service to Haverhill and beyond as it avoided slow grade crossings in Malden and Wakefield. It still connects to the Western Route at Wilmington Junction and runs parallel to it for half a mile.
On June 14, 1959, the B&M introduced a series of service cutbacks, including the abandonment of the north half of the Woburn Loop. The Western Route was abandoned from Reading to Wilmington Junction; all service to Haverhill and beyond was rerouted via the Wilmington Branch. North Wilmington on the Western Route was replaced with Salem Street station, the first station ever built on the Wilmington Branch. When the newly formed MBTA began funding B&M commuter service in January 1965, state subsidies were provided only for service to Reading on the Western Route and Wilmington on the Lowell Line; local governments were required to fund out-of-district service. Salem Street was closed on June 30, 1967, as the B&M cut all service on the line except for a single round trip to Haverhill. That single trip was cut in June 1976.
The MBTA bought the B&M commuter rail assets, including the Wildcat Branch, on December 27, 1976. The Reading line was re-extended to Haverhill as the Haverhill/Reading Line on December 17, 1979. Most trains on the line use the Western Route via Reading; however, the line south of Reading is single-tracked in many locations due to the 1970s construction of the Haymarket North Extension of the MBTA Orange Line subway and has numerous grade crossings, so some express trips run via the Wildcat and the lower Lowell Line. Amtrak Downeaster service to Maine began on December 14, 2001; all Downeaster service uses the Wildcat except during service disruptions such as construction.
The line also carries some freight service by Pan Am Railways, primarily the train "DOBO" (Dover, New Hampshire, to Boston), which mainly hauls sand and gravel from the New Hampshire Northcoast railroad to the Boston Sand and Gravel facility in Somerville.
- Karr, Ronald Dale (1995). The Rail Lines of Southern New England. Branch Line Press. pp. 229–242. ISBN 0942147022.
- Humphrey, Thomas J. & Clark, Norton D. (1985). Boston's Commuter Rail: The First 150 Years. Boston Street Railway Association. pp. 55–70. ISBN 9780685412947.
- Karr, Ronald Dale (2010). Lost Railroads of New England (Third ed.). Branch Line Press. p. 86. ISBN 9780942147117.
- Belcher, Jonathan (22 March 2014). "Changes to Transit Service in the MBTA district" (PDF). NETransit. Retrieved 30 August 2014.
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