Construction is expected to take nine months to complete both entrances and will require each entrance to be closed during construction, according to a news release.
Pentagon City is the sixth station in WMATA's seven-year, $179 million escalator replacement project to install 130 new escalators.
WMATA recently completed the first set of escalators in the project at the Gallery Place 9th and G streets entrance. New escalators are also being installed currently at Federal Center SW, New Carrollton, Rhode Island Avenue and Virginia Square.