page_title: Market–Frankford Line
hierarchical_section_title: Market–Frankford Line
caption_attribution_description: 63rd Street Station
context_page_description: The Market–Frankford Line is one of two rapid transit lines in Philadelphia, Pennsylvania; the two lines are operated by SEPTA. The Market-Frankford Line runs from the 69th Street Transportation Center in Upper Darby, just outside of West Philadelphia, through Center City Philadelphia to the Frankford Transportation Center in Near Northeast Philadelphia. With more than 180,000 boardings on an average weekday, it is the busiest route in the SEPTA system. The line has both elevated and underground portions along its full length.
context_section_description: The Market–Frankford Line (MFL) (also called the Market–Frankford Subway–Elevated Line (MFSE), the Market–Frankford El (MFE), the El (/ɛl/), or the Blue Line) is one of two rapid transit lines in Philadelphia, Pennsylvania; the two lines are operated by SEPTA. The Market-Frankford Line runs from the 69th Street Transportation Center in Upper Darby, just outside of West Philadelphia, through Center City Philadelphia to the Frankford Transportation Center in Near Northeast Philadelphia. With more than 180,000 boardings on an average weekday, it is the busiest route in the SEPTA system. The line has both elevated and underground portions along its full length.
caption: Market–Frankford Line train at 63rd Street station in 2007
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