Let's explore the mammoth infrastructure marvel, the world's largest structure of its kind, the viaduct, a critical part of the freight rail route officially named Fan Railway Bridge Mongya. This colossal railway bridge spans an astonishing length of almost 2,000 kilometers, about 1,250 miles, linking central and southwestern China with Inner Mongolia. Get this, the viaduct comprises a mind-blowing 216 piers, with the tallest one soaring up to 74 meters, 242 feet high. The entire structure stretches across nearly 8,000 meters, 26,000 feet, and its foundation plunges an astounding 91 meters, 298 feet, deep. But what's the purpose of this colossal feat? It's all about transportation, primarily for coal to the region. This railway line handles trains weighing up to a jaw-dropping 20,000 tons, aiming for a staggering cargo turnover of 200 million tons per year.