Puget Sound Shore Railroad Puget Sound Shore Railroad The Puget Sound Shore Railroad and successor Northern Pacific and Puget Sound Shore Railroad built a branch line of the Northern Pacific Railroad between Puyallup and Seattle, Washington, U.S., and partially constructed a line around the east side of Lake Washington to Woodinville. After Congress chartered the Northern Pacific Railroad (NP) in 1864, the communities along Puget Sound competed to be its Pacific terminus. Tacoma, about south of Seattle, became the winner in July 1873, when the NP, then building north from Portland, selected it. Seattle businessmen immediately incorporated the Seattle and Walla Walla Railroad and
Puget Sound Sound extends approximately from Deception Pass in the north to Olympia, Washington in the south. Its average depth is and its maximum depth, off Jefferson Point between Indianola and Kingston, is . The depth of the main basin, between the southern tip of Whidbey Island and Tacoma, Washington, is approximately . In 2009, the term Salish Sea was established by the United States Board on Geographic Names as the collective waters of Puget Sound, the Strait of Juan de Fuca, and the Strait of Georgia. Sometimes the terms "Puget Sound" and "Puget Sound and adjacent waters" are used for not