Complex sentence: About 100 meters downstream is the "Broken Bridge" (断桥) that was built in 1911, but it was bombed and half damaged on the Korean side in the Korean War in 1950 and has not been reconstructed.
Split into simpler sentences: About 100 meters downstream is the old bridge built in 1911, now called the "Broken Bridge" (断桥). It was bombed and half damaged on the Korean side during the Korean War in 1950 and has not been reconstructed.