Its mezzanine level is intended to resemble an underwater environment with a blue-lit wavy ceiling and sand-colored stone tiles with mica flecks.

[3] Lenticular art designed by Marybeth Mungovan Lensel and Jason Asselin is installed on the lobby level of the station.

Because of the configuration of Massachusetts Turnpike exit ramps, inbound SL1 and SL3 buses stop at the station twice: once on Congress Street, then again at the underground platforms after entering the tunnel at Silver Line Way.

[4] Under draft plans released in 2008, a surface stop on Congress Street adjacent to the headhouse would have served both northbound and southbound Urban Ring buses.

[6] In early April 2018, construction on a nearby building caused spalling on a concrete column at World Trade Center, closing the station for a day.