But when streetcar system was partially converted to light rail in the late 1970s, the existing underground metro station was built in its place.

In 2019, parking control officers were assigned to direct traffic through the unsignaled intersection, which reduced delays by 40%.

[6] As part of August 2020 changes to Muni Metro, the K and L were through-routed as an all-surface line, with frequent S Shuttle service between West Portal and Embarcadero.

Mini-high platforms were constructed on Ulloa Street at West Portal to provide accessible transfer between the K/L and subway trains.

[10] On July 16, 2024, the SFMTA approved a modified package of changes that included fewer transit lanes and turn restrictions, as well as a redesign of the "horseshoe" area at the station entrance into a pedestrian plaza.