Prestressed concrete is a type of concrete that is specially designed to withstand tension forces. It is created by placing high-strength steel tendons under tension before the concrete is poured. This process helps to counteract the tensile stresses that the concrete will experience when it is in use, making it stronger and more durable. The main advantage of prestressed concrete is its ability to span longer distances without the need for additional support. This makes it ideal for structures like bridges, parking garages, and large buildings. By using prestressed concrete, engineers can create more efficient designs that save materials and reduce construction costs.