Passenger service on the Portsmouth Branch ceased in 1954, although mixed-train service continued until 1960. A regular freight running from Concord to Portsmouth and return served Epping until 1972, after which a local freight out of Concord served the branch as needed, usually once or twice a week and often not passing beyond Epping where the last concentration of customers was located. Customers in Epping at this time included the Merrimack Farmers Exchange and the W.S. Goodrich brickyard. Occasional hi-and-wide freight movements operated over the Portsmouth Branch in the 1970s due to the lack of close clearance points, with several carrying materials destined to the under-construction Seabrook Station Nuclear Power Plant. Declining track conditions led to the B&M embargoing the branch in December 1979, with the last trains operating to Epping earlier that year and the final train to Raymond following in July 1980 despite the embargo. The Boston & Maine abandoned the track from East Manchester to Newfields in 1982, and the rail was removed in Epping between 1983 and 1985. The railroad beds are now the Rockingham Recreational Trail. Abutments for the WN&R bridge over the Lamprey River can be seen to the west of Route 125.