The railroad bridge at this location was called the Freedom Bridge because many from the North escaped to freedom by crossing its bombed remnants on foot. It was rebuilt, but is blocked from use today by a fence. The walking bridge up to it allows ordinary people to go as close as they are allowed to the North. They write messages for their relatives on the other side, and tie them to the fence.
Many Koreans still have family on the other side of the border. All desperately want their country to be re-unified. The driving bridge was built by Samsung's late chairman out of his personal funds, to spur joint economic development in an effort toward re-unification.
The North wants re-unification as well, but seeks to do it by force...