Northern Railway built in 1847
Acquired by Boston & Maine in 1887
Passenger service discontinued 1965; freight in early 1970s.
Right of way purchased by State of New Hampshire in 1996
Now operated by New Hampshire Trails Bureau
Grafton County section improved for all-season use with a stone dust and cinder ballast surface
Merrimack County section open for 8 years as a winter use only snowmobile trail
Friends of the Northern Rail Trail in Merrimack County founded in 2004 to make this section a four-season trail