So I was watching Ariel America on the Smithsonian Channel and they were featuring small towns. They highlighted Harper’s Ferry. While several things caught my eye the RR related one was the two train bridges that cross the Potomac River and then enters a tunnel. It has three sets of tracks enterin and only two exit; must be a turnout in the tunnel. According to Google earth the north bridge is the B&O and the south bridge is the Winchester and Potomac RR. As you look at the pictures the W&P RR has some interesting trestle work in town as it is elevated. There is some interesting architecture of special note is John Brown’s fort.
https://www.google.com/maps/@39.3235,-77.72967,606m/data=!3m1!1e3
Just some random photos from the net