The old Junction Railroad through the Market Street Tunnel has been abandoned .
The rest of the line is now a SEPTA Regional Rail main line to Arsenal Interlocking and Amtrak 's Northeast Corridor to Grays Ferry .
The old Junction Railroad through the Market Street Tunnel has been abandoned , and the rest of the line is now a SEPTA Regional Rail main line to Arsenal Interlocking and Amtrak 's Northeast Corridor to Grays Ferry .