[6] At the north end of the platform is Landmark, a pair of upturned, 18-foot-tall (5.5 m) cor-ten steel and granite arches that were inspired by the shape of train wheels and the dome of Union Station in downtown Tacoma.

[9] It was included in the unsuccessful 1995 ballot measure to fund regional transit and returned in the Sound Move referendum that was passed by voters in November 1996.

[12][13] The scheduled opening of the Lakewood extension, including South Tacoma's station, was originally set for 2001, but was delayed eleven years due to planning and funding issues in the early 2000s.

[15] Sound Transit began acquiring properties at the station in late 2003, but ran into resistance from the owners of a century-old home at the proposed site for the park-and-ride lot.

[25][26] By 2030, Sound Transit plans to construct new bicycle lanes to South Tacoma station and improve sidewalks in the area as part of a $56 million project.

[31][32] The agency also experimented with a custom express bus from the station to University Place and Olympia that debuted in late 2013, but the program was eliminated in 2014 after a spell of low ridership.