the fairhaven and southern railroad and its successor the seattle and montana railroad were railroads in northwest part of the u.s. state of washington, active in the late 19th and early 20th centuries. they ran roughly south from blaine, washington on the u.s.-canada border. the fairhaven and southern operated 1888-1898 and ran to sedro (part of today's sedro-woolley. it operated from december 1891 as part of the seattle and montana "railway", and was merged with that into its successor, the seattle and montana "railroad", both of which extended service south to seattle. the seattle and montana operated until 1907 when it merged into the great northern railway company.