In 1950, during the Korean War, American troops ‘accidentally’ bombed the original steel-span bridge between North Korea and China. The North Koreans dismantled the bridge less than halfway across the river, leaving a row of support columns. You can wander along the remaining section of the shrapnel-pockmarked bridge and get within the distance of a good toss of a baseball to the North Korean shoreline.
The Sino–Korean Friendship Bridge , the official border crossing between China and North Korea, is next to the old one, and trains and trucks rumble across it on a regular basis.
