From very back to front:
1) Philadelphia, Wilmington, and Baltimore Railroad Bridge (ruin)
2) Amtrak Susquehanna River Bridge (Amtrak ; freight Norfolk Southern)
3) Perryville Railroad Bridge (CSX RR Bridge)
4) Thomas J. Hatem Memorial Bridge (Toll Bridge)
5) Millard E. Tydings Memorial Bridge (Interstate 95)
This is the Upper Chesapeake area where the river meets up with the Bay.