Background and earlier proposals The Chinatown-International District of Seattle was established in the early 20th century by Asian Americans who relocated from modern-day Pioneer Square. The
regrade of South Jackson Street from 1907 to 1909 paved the way for the development of a new Chinatown along King Street in the 1910s, absorbing the former Chinatown by the end of the 1920s. Adjacent blocks also attracted Japanese and Filipino immigrants and descendants, leading to the use of "International District" to describe the area by the mid-20th century. To the west of the new Chinatown, the city built two passenger rail terminals to replace older facilities on the waterfront:
King Street Station, opened in 1906, served the
Great Northern Railway and
Northern Pacific Railway;
Union Station, opened in 1911, served the
Milwaukee Road and
Union Pacific Railroad. The area around Union Station, originally a
tide flat that was filled during the regrades, was home to a
coal gasification power plant and later the station's
railyard. In 1911, civil engineer
Virgil Bogue presented a
comprehensive plan for the city of Seattle, including an elevated
rapid transit line running southeast from King Street Station through Chinatown towards the
Rainier Valley. The plan was, however, rejected by voters on March 5, 1912, leaving it unimplemented. In 1957, Seattle City Engineer M. O. Anderberg and the Seattle Transit Commission proposed a rapid transit system utilizing the
right-of-way cleared for
Interstate 5 between
Everett and
Tacoma. The rapid transit line would travel through downtown Seattle in a tunnel under 5th Avenue, with one of its two stations at South Jackson Street at the site of Union Station. The proposal included redevelopment of Union Station into a multi-level transportation hub, with a
bus terminal for intercity and suburban buses, a public
parking garage, and a rooftop
heliport. The proposal was rejected by the federal government, not wanting to jeopardize freeway construction, and was ultimately shelved. One of the key components of the system was a downtown subway tunnel on 3rd Avenue terminating at Union Station, where it would split into a south branch to serve
Georgetown and
Renton, and an east branch to serve
Bellevue. The ballot measure, requiring a
supermajority to support
bonding to augment $385 million in local funding with $765 million from the
Urban Mass Transportation Administration, failed to reach the 60 percent threshold in 1968 and again during a second vote in 1970. The failure of the Forward Thrust ballot measures led to the creation of
Metro Transit in 1972, operating bus service across King County.
Bus tunnel office complex and International District/Chinatown station, built atop a shared concrete lid Metro Transit began planning a
bus tunnel through downtown Seattle in the 1970s, to be eventually converted to use by
light rail trains. Metro approved the construction of a bus tunnel in 1983, selecting Union Station the tunnel's southern terminus and a route along 3rd Avenue and Pine Street through the rest of downtown. The tunnel would be completed by 1989 and feature public art and stations designed to match the identities of the surrounding area; the tunnel station at Union Station would be designed around an Asian motif reflecting the International District. The bus tunnel's twin
tunnel boring machines were assembled and launched from the site of International District station in May and June 1987, heading north towards the intersection of 3rd Avenue and Pine Street. Most of the station's structure, including a new South Jackson Street bridge over the tunnel, was completed in early 1988. A concrete lid was built atop the station during construction, designed to support a future office complex. In the late 1990s, developers
Vulcan Real Estate and Nitze-Stagen completed the four-building office complex atop the station's western and southern lid. Tunnel construction was completed in early June 1990, a few weeks before the June 23 completion of the
Waterfront Streetcar extension serving the future station. International District station was dedicated at a public open house during the annual
Seafair on July 15, 1990. Bus service in the Downtown Seattle Transit Tunnel began on September 15, 1990, with several Metro bus routes moved into the tunnel from surface streets. The tunnel was served by
dual-mode buses that would switch from diesel power to electric
trolleybus (supplied by overhead wires) at International District station and
Convention Place station, the tunnel's respective termini.
Light rail In the early 1990s, a regional
transit authority (RTA) was formed to plan and construct a
light rail system for the Seattle area. After an unsuccessful attempt in 1995, regional voters passed a $3.9 billion plan to build light rail under the RTA in 1996. The downtown transit tunnel had already been planned for eventual light rail use and was built with tracks that would be incorporated into the initial system. The RTA, later renamed
Sound Transit, approved the tunnel as part of the route of its initial light rail line in 1999. Ownership of the tunnel, including its stations, was transferred to Sound Transit in 2000 but returned two years later to King County Metro under a joint-operations agreement. In November 2004, the
Metropolitan King County Council approved the renaming of the station to International District/Chinatown station. The renaming came at the behest of Chinese community leaders who had recently campaigned to include "Chinatown" in the names of a new
branch library and community center. The new name, implemented during the two-year tunnel closure, came as a compromise between naming the station "Chinatown" and "International District". The downtown transit tunnel closed on September 23, 2005, for a two-year, $82.7 million renovation to accommodate light rail vehicles. The renovation included the installation of new rails, a lowered roadbed at stations for level boarding, new signalling systems and emergency ventilation. As part of the renovation, the outdoor plaza at International District/Chinatown station was repainted with red accents, replacing the original pink, to better reflect the traditional colors of the neighborhood. The tunnel reopened on September 24, 2007, and
Link light rail service began on July 18, 2009, from
Westlake station to
Tukwila International Boulevard station. Bus service within the downtown transit tunnel ended on March 23, 2019, with a ceremonial "last run" beginning and ending at International District/Chinatown station after midnight. The tunnel closure was necessitated by expansion of the
Washington State Convention Center at the site of Convention Place station, along with upcoming light rail construction in 2020. The remaining bus routes were moved to nearby surface stops on 2nd, 4th, and 5th avenues, while the tunnel became exclusive to light rail trains. The
2Line entered simulated service on February 14, 2026, with passengers able to board trains from Lynnwood to International District/Chinatown. Full service began on March 28 with a celebration at the station and other areas along the 2 Line corridor. The new service required the construction of a
turnback track between the existing tracks and platforms, as well as reconfiguration of other tracks in the former bus layover area.
Future As part of the
Sound Transit 3 program, approved by voters in 2016, International District/Chinatown station will be the terminus of a second downtown light rail tunnel, running under 5th Avenue and towards
South Lake Union. The tunnel, part of a line serving
Lower Queen Anne and
Ballard, is scheduled to open in 2036. Alternative options for the tunnel include platforms under Union Station or 4th Avenue to facilitate transfers at King Street Station, with a shallow platform at or a deeper platform at depending on the option. The expected multi-year disruption associated with constructing a station at either location has led to community opposition and delays in planning the final alignment for the project. Some community activists have proposed a no-build alternative to prevent displacement, which earned the support of boardmember
Joe McDermott. A request to study a new option to build a transfer platform adjacent to
Pioneer Square station was introduced by Seattle mayor
Bruce Harrell in 2022. A second station on the south side of the Chinatown–International District would be built near South Dearborn Street at 6th Avenue South. The concept had been introduced by Greg Smith, a real estate developer who owns land at the proposed south station site that he had planned to redevelop into offices and retail. The King County government also announced plans to redevelop its civic campus near Pioneer Square station into a mixed-use neighborhood centered around the north station in the new option. The proposed "north–south" option was opposed by local residents, who formed a citizens' group to organize protests at Sound Transit board meetings; the board voted to continue studying the option but declined to select a preferred alternative in March 2023. A study into the three remaining alternatives—under 4th Avenue at King Street Station, the north–south split stations, and a revived "diagonal" station east of 5th Avenue—was published in November 2024. A preferred alternative is planned to be selected by the Sound Transit board in 2025. ==Station layout==