The Columbia and Cowlitz Railway(FRA Reporting Mark:CLC), headquartered in Longview,WA, serves a 8.5 mile route from the Weyerhaeuser Co. mill in Longview,WA to the junction just outside the city limits of Kelso,WA. From there, traffic is either switched to the Weyerhaeuser Woods Railroad (FRA Reporting Mark:WCTX)where it is transported to Weyerhaeuser's Green Mountain Sawmill at Toutle,WA or it is switched to the Burlington Northern Santa Fe/Union Pacific joint main line for movement to either Portland,OR or Seattle,WA. 

 CLC was incorporated on April 9,1925 and the line was constructed between 1926-1928. The railway is a wholly owned subsidiary of Weyerhaeuser Company. The railway owns a fleet of 500 freight cars including a mix of box cars, centerbeam lumber cars, and flat cars. A fleet of three EMD GP20 locomotives which are numbered 700-702 provide road power for the CLC. One caboose, numbered 6, provides tail end coverage of trains because CLC does not employ Flashing Rear End Devices (FREDS). 

 All CLC freight cars are painted a navy blue color with white lettering and the CLC's locomotives are painted sky blue with white lettering and white pinstripes across the top quarter of the bodies and across the frame sill. The lone caboose is painted safety yellow with black lettering. A signature safety feature of CLC's locomotives are the blue strobe lights on the roofs of the locomotives. CLC chooses blue as their safety light color because of the large number of yellow and red flashing safety lights around the Weyerhaeuse mill in Longview,WA.