 Somserset is part of the Frankford Elevated section of the line, which began service on November 5, 1922.Between 1988 and 2003, SEPTA undertook a $493.3 million reconstruction of the Frankford Elevated.Somerset station was completely rebuilt on the site of the original station; the project included new platforms, elevators, windscreens, and overpasses, and the station now meets ADA accessibility requirements.