Since I moved to Philadelphia I’ve been thinking about getting this shot. I finally did it. Went down to the South St. Bridge at Sunset with my tripod, my 10-stop ND Filter, and my D800 + 24-70. I took a few shots, all of them at 20-30 seconds. This is one of my favorites. With a dash of bright orange at left, there is a bunch of excitement before the viewer calmly scans over the skyline, reflected in the Schuylkill.
Nikon D800, AF-S Nikkor 24-70mm f/2.8G ED
@ 35mm, f/5, 20s, ISO 50
Alex Krengel 
I love this! I pass this every day on my way to class and way home. You should get some shots at the train tracks underneath the bridge too! On U. City side and then on Center City side.
Beautiful shot! I love your work.