Gantry cranes run along the ground on a runway, instead of on an elevated runway system like a bridge crane. In some cases, they may be a less expensive option than a bridge crane. Since they run along the floor, the installation is often quicker and easier than a bridge crane system. They also provide greater flexibility to take the crane with you to a new location down the road, and will allow loads to be moved between indoors and outdoors. Because of these features, gantry cranes are becoming a popular alternative to bridge cranes.