Seems like a huge project is coming for SEPTA improving Arsenal and other areas.
http://www.septa.org/southwestconnection/index.html" onclick="window.open(this.href);return false;
http://www.septa.org/southwestconnection/index.html" onclick="window.open(this.href);return false;
Overall Program Scope
Reconfigure and replace the existing Arsenal Interlocking (area of switches)
Remove the existing Walnut Interlocking and realign rail
Create a new Interlocking and turn back track near University City Station
Replace the overhead contact system and the Overhead Catenary System structures
Repair/Upgrade retaining walls and structural elements inside Walnut St Tunnel
Repair drainage structures