No. 746

 Alco RS-1 (Road Switcher)

TS 746 (Builder #77840) was built in December 1949 by the American Locomotive Works (ALCO) as a road switcher for the Spokane International Railroad (SI #207), but on the Tidewater Southern Railway the diesel-electric locomotive functioned as main power road engine.  It was rated at 1,000 horsepower, utilized GE 731-D traction motors, had a tractive effort of 59,970 lbs, and a maximum designed speed of 60 mph.

During the Union Pacific Railroad acquisition of the Spokane International Railroad in October 1958 , the locomotive was renumbered to UP #1218 and painted to UP colors.  It was retired from the UP/SI in December 1969.  In February of 1970 the locomotive was acquired by the Tidewater Southern Railway from the Chrome Crankshaft Company and renumbered to TS #746.  It retained its UP colors for a short time then repainted to the green WP scheme.

TS #746 was retired from the TS in December 1976 and sold to the Central California Traction Company (CCT #80).  It was then sold to a private party in March 1983 and  is presently located at Willits, California.