Puget Sound Regional Council major cities are Seattle, Bellevue in King County, Tacoma in Pierce County, Everett in Snohomish County, and Bremerton in Kitsap County. The region's population was estimated to be over 3.8 million as of April 2014. In 1956 the four counties of the Puget Sound region established the Puget Sound Regional Planning Conference, which changed its name to the Puget Sound Governmental Conference (PSGC) in 1958. It launched the Puget Sound Regional Transportation Study (PSRTS) in 1962 with support from the Washington State Highway Commission, the U.S. Bureau of Public Roads (predecessor of the Federal Highway Administration), and the U.S. Department
Puget Sound and Pacific Railroad through on these unit trains to Grays Harbor, Washington for unloading. These run through trains are operated by PSAP crews. The PSAP hauled around 80,000 carloads in 2011. Elma Subdivision The Elma Subdivision is the primary mainline for the Puget Sound and Pacific Railroad and is approximately 70 miles in length. The Elma Sub starts in Centralia, Washington, Milepost 5, and ends in Hoquiam, Washington, Milepost 75. This subdivision handles traffic to and from the Port of Grays Harbor including grain, autos, soda ash, soybean, garbage, manifest, and local trains. Shelton Subdivision The Shelton Subdivision stretches from Elma, Washington to