Published: May 30, 2026
By: Adam Burns
The Atlantic Coast Line (ACL), operating primarily over the relatively flat terrain of the Southeast from Virginia to Florida and Alabama, built a steam roster emphasizing versatile, efficient power rather than massive articulated locomotives. Its easy grades allowed smaller, dual-service engines to handle both passenger and freight duties effectively until dieselization in the mid-1950s.
Early steam power consisted largely of 4-4-0 Americans (classes C through F-5, D series, and H), 2-6-0 Moguls (G through G-5), and 4-6-0 Ten-Wheelers (K series). These lighter engines suited local passenger runs, branch lines, and light freight. Switchers included numerous 0-6-0 (E through E-13) and some 0-8-0 (E-14) and 0-4-0 (A-3) types for yard and terminal work. Consolidations (L-1 through L-4 2-8-0) provided reliable freight service on secondary lines.
A Baldwin Locomotive Works photo from 1938 featuring new Atlantic Coast Line 4-8-4 #1805. Intended for passenger service these engines were listed as Class R-1 and numbered 1800-1811.As traffic grew in the early 20th century, the ACL invested in heavier power. The backbone of its roster became the 4-6-2 Pacific type (classes J and P through P-5). The railroad rostered roughly 235 Pacifics, one of the largest fleets of any U.S. railroad. Many were dual-service engines, equally at home on fast passenger trains like the Champion or hauling perishable reefers and merchandise freights. Notable examples included the USRA Light Pacifics (P-5-A class), such as No. 1504 (originally 497, built 1919 by ALCO Richmond), which featured 73-inch drivers for passenger work. Some P-5-B variants used smaller 69-inch drivers optimized for freight. These locomotives excelled on the ACL’s main lines thanks to good steaming and moderate axle loads.
For heavier freight, the ACL turned to 2-8-2 Mikados (M and M-2 classes), 2-10-0 Decapods (O class, including WWI-era engines originally built for Russia), and twenty-plus 2-10-2 Santa Fe types (Q-1 class, built by Baldwin in 1925–1926, plus a few acquired via merger). These engines handled drag freights and the challenging “Bow Line” between Waycross and Montgomery.The pinnacle of ACL steam arrived in 1938 with twelve Baldwin-built 4-8-4 Northerns (R-1 class, numbered in the 1800 series). Designed for high-speed passenger service between Richmond and Jacksonville, these modern engines reduced the need for double-heading on heavy trains. They represented the railroad’s brief flirtation with truly large steam power before diesels took over.
Steam remained dominant through World War II but declined rapidly afterward. The ACL completed full dieselization around 1955. Most steam locomotives were scrapped by the late 1950s, though a few Pacifics and other types found second lives or preservation. The ACL’s steam roster reflected a pragmatic approach: reliable, well-maintained power tailored to its geography rather than brute force. Today, surviving examples like ACL 1504 remind enthusiasts of an era when Pacifics symbolized the railroad’s speed and efficiency on Southern rails.
| Type | Class | Numbers | Qty | Builder | Built | Retired | Notes |
|---|---|---|---|---|---|---|---|
| 0-6-0 | E | 117 | 1 | Baldwin | 1900 | 1929 | |
| 0-6-0 | E-3 | 118-120 | 3 | Baldwin | 1901 | 1934 | |
| 0-6-0 | E-3 | 124-125 | 2 | Baldwin | 1903 | 1936 | |
| 0-6-0 | E-4 | 126-190 | 65 | Baldwin | 1901 | 1950-1952 | Ex-SF&W |
| 0-6-0 | E-5 | 121-123 | 3 | Richmond | 1901 | 1950-1952 | |
| 0-6-0 | E-7 | 1151-1158 | 8 | Cooke | 1917-1919 | 1951-1952 | |
| 0-6-0 | E-9-S | 1136-1145 | 10 | Baldwin | 1912-1913 | 1948-1952 | |
| 0-6-0 | E-10 | 1100-1125 | 26 | Baldwin | 1916 | 1951-1952 | |
| 0-6-0 | E-11 | 1126, 1127 | 2 | Baldwin | 1917 | 1952 | |
| 0-6-0 | E-11 | 1128-1135 | 8 | Baldwin | 1917 | 1952 | |
| 0-6-0 | E-13 | 1146-1150 | 5 | Baldwin | 1920 | 1950-1952 | Ex-AB&C |
| 0-6-0 | AS-1 | 7023-7028 | 3 | Baldwin | 1923-1926 | 1952 | |
| 0-8-0 | E-14 | 1200-1234 | 35 | Baldwin | 1907 | 1939-1942 | Ex-AB&C, rebuilt from 4-6-0 |
| 0-8-0 | AS-2 | 7033-7035 | 3 | AB&C | 1939-1942 | 1952 | Ex-AB&C, rebuilt from 4-6-0 |
| 2-8-0 | L | 700-713 | 14 | Baldwin | 1901, 1903 | 1939-1942 | |
| 2-8-0 | L-1 | 714-716 | 3 | Baldwin | 1905 | 1951-1955 | |
| 2-8-2 | L-2 | 717-720 | 4 | Baldwin | 1911 | 1951-1955 | |
| 2-8-2 | M | 800-819 | 20 | Baldwin | 1911 | 1950-1952 | |
| 2-8-2 | M-2 | 820-836 | 17 | Baldwin | 1918-1923 | 1952 | |
| 2-8-2 | AK-1 | 7205-7213 | 4 | Baldwin | 1912-1915 | 1946-1951 | Ex-AB&C |
| 2-8-2 | AK-2 | 7225-7235 | 11 | Alco | 1912-1915 | 1947-1952 | Ex-AB&C, NYC |
| 2-10-0 | AK-3 | 7301, 7302 | 2 | Baldwin | 1910 | 1946, 1947 | Ex-AB&C |
| 2-10-2 | O | 8000-8009 | 10 | BLW, Rich | 1917-1918 | 1949-1952 | |
| 2-10-2 | Q-1 | 2000-2019 | 20 | Baldwin | 1925 | 1951-1952 | |
| 4-4-2 | AF-1 | 7401-7403 | 3 | Baldwin | 1917 | 1951-1952 | Ex-AB&C |
| 4-6-0 | I-3 | 98, 99 | 2 | Baldwin | 1900 | 1934 | |
| 4-6-0 | K | 322-327 | 6 | Richmond | 1900 | 1934 | |
| 4-6-0 | K | 328-351 | 24 | Baldwin | 1901-1903 | 1934-1935 | |
| 4-6-0 | K-4 | 212-222 | 11 | Baldwin | 1903 | 1934 | |
| 4-6-0 | K-5 | 233-211 | 12 | Baldwin | 1907 | 1936-1939 | |
| 4-6-0 | K-5 | 910-1005 | 96 | Baldwin | 1906-1907 | 1935-1964 | |
| 4-6-0 | K-6 | 223-232 | 10 | Baldwin | 1905 | 1934-1942 | |
| 4-6-0 | K-6 | 351-399 | 49 | Baldwin | 1904-1906 | 1935-1950 | |
| 4-6-0 | K-6 | 900-909 | 10 | Baldwin | 1906 | 1935-1950 | |
| 4-6-0 | K-9 | 206-210 | 5 | Rhode Island | 1900 | 1935-1947 | Ex-SF&W |
| 4-6-0 | K-9 | 211 | 1 | Baldwin | 1902 | 1934-1942 | Ex-SF&W |
| 4-6-0 | K-14 | 245-254 | 10 | Baldwin | 1910 | 1934 | |
| 4-6-0 | K-14 | 1006-1011 | 6 | Baldwin | 1910 | 1947-1950 | |
| 4-6-0 | K-15 | 1012-1044 | 34 | Baldwin | 1910 | 1947-1951 | |
| 4-6-0 | K-16 | 1045 | 1 | Baldwin | 1912-1933 | 1947-1955 | |
| 4-6-0 | AW-1 | 7060 | 1 | Baldwin | 1922 | 1952 | |
| 4-6-0 | AW-2 | 7064 | 1 | Baldwin | 1907 | 1949 | Ex-AB&C |
| 4-6-0 | AW-3 | 7011-7113 | 6 | Baldwin | 1907 | 1949 | Ex-AB&C |
| 4-6-0 | AW-4 | 7115-7124 | 9 | Baldwin | 1906-1907 | 1950-1952 | Ex-AB&C |
| 4-6-2 | P | 260-274 | 15 | Baldwin | 1906-1907 | 1950-1952 | Ex-AB&C |
| 4-6-2 | P-1 | 275-286 | 12 | Baldwin | 1911 | 1939-1944 | Ex-AB&C |
| 4-6-2 | P-2 | 400-410 | 11 | Baldwin | 1912 | 1939-1944 | Ex-AB&C |
| 4-6-2 | P-3 | 411-455 | 45 | Baldwin | 1913 | 1950-1952 | |
| 4-6-2 | P-4 | 456-482 | 27 | Baldwin | 1914-1916 | 1947-1952 | |
| 4-6-2 | P-5-A | 1500-4569 | 70 | Brooks, Rich | 1919-1920 | 1939-1944 | |
| 4-6-2 | P-5-B | 1600-1764 | 165 | Baldwin | 1922-1926 | 1950-1953 | |
| 4-6-2 | AJ-1 | 7071-7086 | 11 | Schenectady | 1911-1913 | 1946-1955 | Ex-AB&C, FEC |
| 4-6-2 | AJ-2 | 7153, 7175 | 2 | Lima | 1914 | 1949, 1950 | Ex-AB&C, GN |
| 4-8-0 | AS-3 | 7034 | 1 | Baldwin | 1906 | 1949 | Ex-AB&C, N&W |
| 4-8-2 | J-1 | 1401-1405 | 5 | Brooks | 1924 | 1951-1952 | Ex-DL&W |
| 4-8-2 | AM-1 | 7351, 7372 | 2 | Schenectady | 1924 | 1951 | Ex-AB&C, FEC |
| 4-8-4 | R-1 | 1800-1811 | 12 | Baldwin | 1938 | 1951-1952 |
AB&C = Atlanta, Birmingham & Coast
DL&W = Delaware, Lackawanna & Western
FEC = Florida East Coast
GN = Great Northern
N&W = Norfolk & Western
NYC = New York Central
SF&W = Savannah, Florida & Western
Ex- indicates locomotives acquired from another railroad.
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