Puget Sound Electric Railway Puget Sound Electric Railway The Puget Sound Electric Railway was an interurban railway that ran for 38 miles between Tacoma and Seattle, Washington in the first quarter of the 20th century. Portions of the right-of-way still exist as multi-use trail through Milton, Washington, as well as from Pacific to Tukwila, Washington. The PSE began operations on September 25, 1902 with a line that started in downtown Tacoma, ran along Pacific and Puyallup Avenues, followed the course of present day Pacific Highway through Fife and to Milton, turned southeast towards Puyallup and paralleled the path of today's SR 167 through Pacific,
Puget Sound faults geologic province is the approximately 50 million year (Ma) old marine basalts of the Crescent Formation, part of the Siletzia terrane that underlies western Washington and Oregon. East of Puget Sound the basement of the Cascades province is various pre-Tertiary (older than 65 Ma) metamorphic rock. Somewhere between Puget Sound and Cascades foothills these two geological provinces come into contact. As the juxtaposition of various disparate tectonic structures in northwest Washington requires significant strike-slip movement, it is further expected that this contact will be a major fault. The northern end of the Crescent Formation (aka Metchosin Formation) has been identified