Belfast and Moosehead Lake Railroad

MEC Belfast Branch (1871–1925)

As the name of the railroad suggests, the original intent was to build the line 88 miles inland to Greenville on Moosehead Lake. Instead, the Maine Central Railroad leased the road, which connected with the MEC's Portland-Bangor main line at Burnham Junction. Located at the far end of Waldo County, the connection was at milepost 97 of the MEC main line, some 14 miles northeast of Waterville (MP 83) and 41 miles southwest of Bangor (MP 138).

Beginning on December 23, 1870, the MEC ran the line as its Belfast Branch. The railroad prospered under the MEC, with three daily round trips for passengers. Most freight during this period was southbound, consisting largely of grain for poultry production in the area, as well as smaller amounts of fish oil, leather, coal, lumber and fertilizer. Outbound freight originally included a large amount of processed fish from Belfast's processing plants; shoes and other manufactured goods from Belfast; farm products from Waldo, Brooks, Knox, and Thorndike; and milk from the Turner Center Creamery in Unity.

B&MLRR (1926–2007)

With the decline in American railroad profitability in the 20th century, the Maine Central discontinued its lease of the Belfast Branch on January 1, 1926. The operation of the newly independent Belfast and Moosehead Lake Railroad fell to the city of Belfast, and for the first time, the B&MLRR began running trains under its own name.

In the 1950s and 1960s, much of the freight was chicken feed for the area's poultry houses. The railroad dieselised in 1946 and scrapped its last steam locomotive (BML#19) in 1950. Through this period, the railroad continued to decline. Passenger service ceased on March 9, 1960, after the B&ML lost its U.S. Mail (RPO) contract. There was a burst of good freight business in the 1970s, but by 1990, freight traffic had ceased as well. In the early 1990s, heritage railroad tourist trains began running.