The 36th Street Portal is a SEPTA subway–surface lines trolley station in Philadelphia serving Route 10.

The portal station was opened on October 17, 1955[3] by the Philadelphia Transportation Company (PTC) as part of a larger project to move portions of the elevated Market Street Line and surface trolleys underground.

[4] The original project to bury the elevated tracks between 23rd to 46th streets was announced by the PTC's predecessor, the Philadelphia Rapid Transit Company (PRT), in the 1920s, but was delayed due to the Great Depression and World War II.

[5] However, service to the vicinity of 36th and Market streets has existed long before then, as the Route 10 was established in its original form by the PRT in 1906.

[2] East of the station, trolleys enter the tunnel and continue to Center City Philadelphia.