Bangor & Aroostook Steam Roster (Post 1900)
Published: May 29, 2026
By: Adam Burns
The Bangor & Aroostook Railroad (BAR), Maine’s legendary potato and paper hauler stretching deep into the Aroostook County wilderness, relied on a compact yet hardworking steam fleet for much of its independent existence. At its 1916 peak the railroad rostered around 95 steam locomotives, trimmed to about 62 by 1941 through modernization. These engines battled brutal winters, light rail on branches, and seasonal surges of potato cars, pulpwood, and mill traffic. While never a giant Class I, BAR invested in relatively modern power into the mid-1940s, acquiring or building engines well after many peers had slowed such purchases. Full dieselization arrived by August 1952, but steam occasionally returned for emergency or peak rushes, with retirements stretching into the mid-1950s.
Small yard and industrial power centered on switchers. Early 0-6-0s (Manchester-built, such as classes M and P, numbers in the 310–325 range) handled Bangor and Millinocket terminals. Later 0-8-0s provided more muscle: a single 1928 Alco (330), four ex-Boston & Maine 1922 engines (335–338, class S-2A), and two 1931 units (340–341), plus a few others. These stout switchers managed mill spurs and classification duties efficiently in tight spaces.
Bangor & Aroostook 4-4-0 #213 (Class K) at Derby, Maine on August 5, 1930. The American was outshopped by the Manchester Locomotive Works in August, 1893 (construction number 1595).The backbone of everyday operations for decades came from 4-6-0 Ten-Wheelers. Manchester (Alco) products dominated, with large groups like class D-1 (54–78, 25 units, 1901–1907), D-2a (82–87), D-3 (90–95, superheated), and earlier C and Ea classes (140s, 234–243). These versatile 4-6-0s powered mixed trains, locals, and lighter freights across the system, proving reliable on the railroad’s lighter branches. Many received superheaters and other upgrades to extend service into the diesel era; retirements ran from the late 1920s through 1952.
For heavier freight, BAR turned to 2-8-0 Consolidations. Roughly 25–30 units formed the core heavy-haul fleet, including Rhode Island-built GA class (170–172), numerous Schenectady G-class 2-8-0s (180–195), ex-B&M G-1As (196–197), and later G-2s (400–405, some delivered as late as 1945). These engines excelled dragging long strings of potato reefers or timber trains over the undulating Maine landscape, often requiring helpers southbound out of Millinocket.
Passenger and premium services used more refined power. Five handsome 4-6-2 Pacifics (250–254) arrived from Alco Schenectady in 1927 for the Aroostook Flyer and Potatoland Special. Earlier 4-4-0 Americans (K class rebuilds like 214–216) and rebuilt 2-6-0 Moguls handled lighter passenger and mixed duties, with many 2-6-0s converted to 4-4-0s in the 1910s.
The stars of the roster were the 4-8-2 Mountains. BAR purchased ten new Alco Class M engines (100–109) between 1929 and 1945, featuring 63-inch drivers, 240 psi boilers, thermic siphons, and feedwater heaters—powerful yet relatively low-speed machines ideal for the road’s traffic profile. Five additional M-1s (120–124) came secondhand from the New York, Ontario & Western in 1946. These big engines headed the heaviest freights and occasionally graced passenger trains, representing BAR’s most modern steam investment.
BAR’s steam fleet reflected pragmatic regional adaptation: mostly Alco/Manchester products, black paint with prominent gold or white lettering, and a focus on durability over speed. The railroad’s isolation and seasonal demands allowed it to extract maximum value from these locomotives before the reliable EMD diesels took over. Very few BAR steam engines survive today, but historic photos of Mountains flanking potato trains or Consolidations in snow capture the romance of northern Maine railroading. For modelers, the variety—from chunky switchers to graceful Pacifics and muscular Mountains—offers rich opportunities to recreate the pre-diesel potato empire.
Roster (Post 1900)
| Wheel Arrangement | Class | Road Number(s) | Quantity | Builder(s) | Completion Date | Retirement | Notes |
|---|---|---|---|---|---|---|---|
| 4-6-0 | D-1 | 54-78 | 25 | Manchester (Alco) | 1901-1907 | 1927-1952 | - |
| 4-6-0 | D-2a | 82-87 | 6 | Manchester (Alco) | 1907 | 1935-1951 | - |
| 4-6-0 | D-3 | 90-95 | 6 | Manchester< (Alco)/td> | 1911 | 1951-1952 | - |
| 4-8-2 | M | 100-109 | 10 | Alco | 1929-1945 | 1950-1953 | - |
| 4-8-2 | M-1 | 120-124 | 5 | Alco | 1929 | 1948-1949 | ex-New York, Ontario & Western |
| 4-6-0 | Ea | 140-142 | 3 | Rhode Island (Alco) | 1906 | 1947-1951 | - |
| 2-8-0 | GA | 170-172 | 3 | Rhode Island (Alco) | 1907 | 1949-1951 | - |
| 2-8-0 | G | 180-195 | 16 | Schenectady (Alco) | 1914-1924 | 1947-1951 | - |
| 2-8-0 | G-1A | 196, 197 | 2 | Baldwin, Alco | 1913 | 1950, 1947 | ex-Boston & Maine |
| 4-4-0 | K-1 | 214-216 | 3 | Bangor & Aroostook | 1915 | 1923-1924 | Formerly 2-6-0s. |
| 4-6-0 | F-1 | 234, 235 | 2 | Manchester (Alco) | 1907 | 1926 | - |
| 4-6-2 | F | 250-254 | 5 | Schenectady (Alco) | 1927 | 1945-1953 | - |
| 4-6-0 | C-1 | 240-243 | 4 | Manchester (Alco) | 1902 | 1928-1951 | - |
| 0-6-0 | M | 310, 311 | 2 | Manchester (Alco) | 1900-1901 | Sold between 1916-1917. | - |
| 0-6-0 | P | 320-325 | 6 | Manchester (Alco) | 1905-1908 | 1935-1937 | - |
| 0-8-0 | SA | 330 | 1 | Alco | 1928 | 1951 | - |
| 0-8-0 | S-2A | 335-338 | 4 | Alco | 1922 | 1949-1950 | ex-Boston & Maine |
| 0-8-0 | S-1A | 340-341 | 2 | Alco | 1931 | 1953 | - |
| 2-8-0 | G-2 | 400-405 | 6 | Alco | 1937, 1945 | 1951-1956 | - |
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