This is the famous Burnside Bridge at Antietam National Battlefield. The structure is the original. 500 Confederate soldiers held the area where I was standing when I made this image but in three hours of deadly fighting, the Union forces took the bridge, crossed Antietam Creek and then forced the Confederates back in retreat toward Sharpsburg, MD. The 12-hour Antietam battle was essentially a “draw” with 100,000 engaged. About 23,000 in total were killed, wounded or went missing. Nikon P7100.