USRA Heavy Mikado

USRA Heavy Mikado
Technical specifications
Manufacturer(s)	ALCO, Baldwin, Lima
Build date	1918–1944
Total produced	233 originals, plus 724 copies Total: 957
Rail gauge	4 Foot 8 Inches
Valve gear	Walschaerts
Cylinders	Two
Boiler pressure	190 psi (1.31 MPa)
Bore stroke	27 in × 32 in (690 mm × 810 mm)
Firegrate area	70.8 sq ft (6.58 m2)
Fuel type	Coal
Performance figures
Tractive effort	60,000 lbf (270 kN)
Disposition details
Preserved	None Preserved
Disposition	All Scrapped

File:USRA Heavy Mikado diagram.jpg

General arrangement drawing.

The USRA Heavy Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration (USRA), the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification. A total of 233 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design, which was built to the total of 957 locomotives including the USRA originals and all subsequent copies.

Heavy Mikado used the same running gear as the USRA Light Mikado but were built to a higher axle load, larger cylinders and a much larger boiler for more power and steam-generating ability. Many aspects of the PRR L1s class were carried over to the Heavy Mikado, although not that locomotive's distinctive Belpaire firebox.

Original owners

USRA originals

Table of original USRA allocation

Railroad	Quantity	Class	Road numbers	Notes
Central Railroad of New Jersey	10	M1s	850–859	Built 1918-1925 by ALCO and Baldwin reclassified M63 in 1945. Scrapped 1947-1955
Chicago, Burlington & Quincy Railroad	15	O-4	5500–5514	Built 1919 by Baldwin . Several to Colorado and Southern Railway and Fort Worth and Denver Railroad. Scrapped 1954-1957
CB&Q affiliate Fort Worth and Denver Railway	5	E-4A2	451–455	Built 1919 by Baldwin. Scrapped 1958-1959
Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road")	100	L3	8600–8699	Built 1918 ALCO. Renumbered 300–399 (not in order). Scrapped 1938-1956
Chicago, St. Paul, Minneapolis and Omaha Railway ("Omaha Road")	4	J-2	422–425	Built 1919 by ALCO. Scrapped 1942-1944
El Paso and Southwestern Railroad	5	H1s-59	363-367	Built 1911 by Baldwin . 4 to Great Northern Railway #3204–3208 in 1920 Scrapped by Great Northern 1947-1950. Rest Scrapped 1948-1955 by El Paso and Southwestern Railroad .
Elgin, Joliet and Eastern Railway	5	AB	738-742	Built 1918 by Baldwin . To Western Pacific Railroad in 1920. Scrapped 1939-1941
Erie Railroad	15	N-2	3200–3214	Built 1918 by ALCO . Scrapped 1950-1952
Great Northern Railway	4	O-3	3145–3148	Built 1918 by ALCO. Renumber to 3200-3203 . Scrapped 1941-1942
Louisville and Nashville Railroad	20	J4	1750–1769	Built 1918 by ALCO. Scrapped 1943-1945
New York Central Railroad subsidiary Pittsburgh and Lake Erie Railroad	15	H-9b, H-9d	9505–9509, 9510–9519	Built 1919 by ALCO and Baldwin . Scrapped 1950-1952
New York Central Railroad subsidiary Pittsburgh, McKeesport and Youghiogheny Railroad	15	H-9a, H-9c	9580–9589, 9590–9594	Built 1918-1919 by ALCO. Scrapped 1947-1948
Wheeling and Lake Erie Railway	20	M-1	6001–6020	Built 1918 . Later to New York, Chicago and St. Louis Railroad ("Nickel Plate Road") #671–690 in 1949. Scrapped 1950-1953
Total	233

Copies

Table of copies

Railroad	Quantity	Class	Road numbers	Notes
Central Railroad of New Jersey	56	M2s, M2as, M3	860–915	Built 1920-1923 by ALCO. Later reclassified M63 in 1945. Scrapped 1949-1958
Chicago, Indianapolis and Louisville Railroad ("Monon")	1		530	Built 1923 ALCO . Scrapped 1946
Chicago, St. Paul, Minneapolis and Omaha Railway ("Omaha Road")	6	J-2	426–431	Built 1919 by ALCO . Scrapped 1947-1960
Chicago, St. Paul, Minneapolis and Omaha Railway ("Omaha Road")	8	J-3	432–439	Built 1926 by ALCO Schenectady . Scrapped 1949-1961
Louisville and Nashville Railroad	145	J-4, J-4A	1770–1914	Built 1918-1926 by ALCO . Scrapped 1945-1960
Missouri Pacific Railroad	170	MK-63	1401–1570	Built 1921-1923 by ALCO . Scrapped 1949-1955
MP subsidiary St. Louis, Brownsville and Mexico Railway	10	MK-63	1111–1120	Built 1926 by ALCO-Brooks . Scrapped 1949-1956
New York, Chicago & St. Louis Railroad ("Nickel Plate Road")	3	H-6f	662-665	Built 1918 by Lima . Scrapped 1955
Pittsburgh and West Virginia Railway	8	H6,H7	1001-1002,1110,1150-1153	Built 1918 by Baldwin and ALCO . Scrapped 1945-1953
St. Louis-San Francisco Railway	65	4100	4100–4164	Built 1923-1926 by Baldwin . Scrapped 1952
Southern Railway	115	Ms-4	4800–4915	Built 1923-1928 by ALCO and Baldwin . Scrapped 1947-1959
Southern subsidiary Alabama Great Southern Railroad	8	Ms-4	6622–6629	Built 1926 by ALCO . Scrapped 1941-1949
Southern subsidiary Cincinnati, New Orleans and Texas Pacific Railroad	43	Ms-4	6320–6337, 6350–6374	Built 1926 by Baldwin and ALCO . Scrapped 1950-1955
West Point Route (Atlanta and West Point Rail Road)	1	F	430	Built 1944 by Baldwin. Scrapped 1949
West Point Route (Western Railway of Alabama)	1	F	380	Built 1944 by Baldwin . Scrapped 1952
Total	724

None of the originals built under USRA auspices or any of the subsequent copies were preserved. All were scrapped from 1938-1961

Steam Locomotives of the United States Railroad Administration (USRA).
Switchers	0-6-0 • 0-8-0
Light	2-8-2 • 2-10-2 • 4-6-2 • 4-8-2
Heavy	2-8-2 • 2-10-2 • 4-6-2 • 4-8-2
Articulated	2-6-6-2 • 2-8-8-2