Spokane, Portland and Seattle 539

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Spokane, Portland and Seattle 539
No. 539 on static display at the Williams Depot shortly after its cosmetic repaint, 2014
Type and origin Power type Steam Builder American Locomotive Company (Brooks works) Serial number 57954 Build date September 1917, Reconfigured January 1946
Specifications Configuration: ​  • Whyte 2-8-2  • UIC 1D'1 h Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 63 in (1,600 mm) Length 77 ft (23 m) Axle load 64,400 lb (29,200 kg) Adhesive weight 247,000 lb (112,000 kg) Loco weight 337,000 lb (153,000 kg) Total weight 551,000 lb (250,000 kg) Fuel type New: Coal Now: Bunker oil Fuel capacity Coal: 36,000 lb (16,329.3 kg; 16.3 t) Fuel oil: 4,357 US gal (16,490 L; 3,628 imp gal) Water cap. New: 10,000 US gal (38,000 L; 8,300 imp gal) Now: 9,300 US gal (35,000 L; 7,700 imp gal) Firebox: ​  • Grate area 70.3 sq ft (6.53 m2) Boiler pressure 200 lbf/in2 (1.38 MPa) Cylinders Two Cylinder size 28 in × 30 in (711 mm × 762 mm) Valve gear Walschaerts Valve type Piston valves Loco brake Air
Performance figures Maximum speed 40 mph (64 km/h) Tractive effort 57,120 lb (25,910 kg)
Career Operators Northern Pacific Railway Spokane, Portland and Seattle Railway Class W-3(NP) O-3(SP&S) Numbers NP 1762 SP&S 539 GCRY 539 Last run 1956 Retired 1957 Current owner Port of Kalama Disposition On indoor static display at Interpretive Center

Spokane, Portland and Seattle Railway No. 539 is the only preserved example of the class O-3 2-8-2 "Mikado" steam locomotive. It was built by the American Locomotive Company in 1917 for the Northern Pacific Railway as engine No. 1762. It was sold to the Spokane, Portland and Seattle Railway and renumbered 539, in August 1944. It was reconfigured and converted to oil burning in January 1946. The locomotive was retired in 1957, and it was displayed in Esther Short Park, Washington, until 1997. That year, it was moved to Battle Ground for a potential restoration that never came to fruition. In 2007, it was acquired by the Grand Canyon Railway and moved to Williams, Arizona for an operational restoration that also never came to fruition. In 2019, No. 539 was purchased again by the Port of Kalama, who moved it back to Washington and put it on static display inside the Port's Interpretive Center that was constructed in 2014.