service. The next major change to service in the corridor came on June 7, 1977, when Amtrak introduced the long-distance Pioneer between Seattle, Portland and Salt Lake City, Utah. To maintain the same level of service between Seattle and Portland, the Puget Sound was eliminated, and the schedule of the Mount Rainier was shifted. The corridor expanded south of Portland to Eugene on August 3, 1980 with the addition of the Willamette Valley, which operated with two daily round trips, financially subsidized by the State of Oregon. The Pacific International and Willamette Valley struggled to attract riders and were discontinued in September 1981 and December 1981, respectively. This left three trains on the Seattle–Portland corridor: the regional Mount Rainier and the long-distance Pioneer and Coast Starlight. This level of service would remain unchanged for 13 years. Expansion in the 1990s In 1994, Amtrak began a six-month trial run of modern Talgo equipment over the Seattle–Portland corridor. Amtrak named this service Northwest Talgo, and announced that it would institute a second, conventional train on the corridor (supplementing the Mount Rainier) once the trial concluded. Regular service began on April 1, 1994. Looking toward the future, Amtrak did an exhibition trip from Vancouver through to Eugene. Amtrak replaced the Northwest Talgo with the Mount Adams on October 30. At the same time, the state of Oregon and Amtrak agreed to extend the Mount Rainier to Eugene through June 1995, with Oregon paying two-thirds of the $1.5 million subsidy. Service to Vancouver, BC returned on May 26, 1995, when the Mount Baker International began running between Vancouver and Seattle. The state of Washington leased Talgo equipment similar to the demonstrator from 1994. The Mount Rainier was renamed the Cascadia in October 1995; the new name reflected the joint Oregon–Washington operations of the train. A third Seattle–Portland corridor train began in the spring of 1998 with leased Talgo equipment, replacing the discontinued long-distance Pioneer. The other Seattle–Portland/Eugene trains began using Talgo trainsets as well, while the Seattle-Vancouver train used conventional equipment. In preparation for the Vancouver route receiving Talgo equipment as well, Amtrak introduced the temporary Pacific Northwest brand for all four trains, dropping individual names, effective with the spring 1998 timetable. Amtrak Cascades Amtrak announced the new Amtrak Cascades brand in the fall 1998 timetable; the new equipment began operation in December. The full Cascades brand was rolled out on January 12, 1999,