The Nanjing Yangtze River Bridge is a 4-lane steel bridge in Nanjing that crosses the Yangtze River. It has two levels. The top level is a road for cars, buses, and trucks. There is also a sidewalk for people on foot. That part is 4588 meters or 15,052 feet long. The bottom level is a railroad for trains. That part is 6772 meters or 22,218 feet long.