The tunnel was constructed from 1912 to 1914 by the Chicago, Milwaukee, St. Paul and Pacific Railroad ("The Milwaukee Road") as part of its line from Chicago to Seattle

citation

Wikipedia contributors. (2023, July 26). Snoqualmie Tunnel. In Wikipedia, The Free Encyclopedia. Retrieved August 25, 2024, from https://en.wikipedia.org/w/index.php?title=Snoqualmie_Tunnel&oldid=1167162207

Snoqualmie Tunnel (Wikipedia) The Snoqualmie Tunnel is a former railroad tunnel near Snoqualmie Pass in the U.S. state of Washington, located east of Seattle. The tunnel crosses the Cascade Range about three miles (5 km) south of the pass, which is used by Interstate 90, on the border between King County and Kittitas County. It is 11,894 feet (2.253 mi; 3.625 km) long and is at an approximate elevation of 2,600 feet (790 m) above sea level, just north of Keechelus Lake. Its east portal is at Hyak.