The Market-Frankford Line runs east-west along Market Street and then heads north-south along Frankford Avenue. The line is elevated, except for the section in Center City Philadelphia, which is underground. The Market-Frankford Line is SEPTA's busiest, accounting for about 25 percent of the system's daily ridership each day
5th Street Station
Bridge-Pratt Terminal (Frankford Terminal), August 1999
M-3 leaving 30th Street, August, 14, 1998
M-3 and M-4 cars resting in the 69th Street Yard, August 14, 1998
M-4 arriving at 56th Street, June 27, 2001
M-4 1001 at 15th Street, June 21, 2003
M-4 1023 leaving Millbourne, June 27, 2001
M-4 1085 at Millbourne, June 27, 2001
M-4 1085 at Millbourne, June 27, 2001
M-4 1105 at 46th Street. The elevated structure to the right was the old El which submerged at 22nd Street and was used until 1955. Photo taken on June 27, 2001.
M-4 1105, probably at 56th Street, June 27, 2001
M-4 1116 at Millbourne, June 27, 2001
M-4 1118 at 46th Street, June 27, 2001
Millbourne Station, June 27, 2001