Lancaster County has 28 covered bridges. Located in the heart of Amish country, bridge traffic includes buggies as well as cars. The longest covered bridge in the world was built in Lancaster County in 1814. It crossed the Susquehanna River between Columbia and Wrightsville, a distance of over a mile (5,960 feet). Ice and high water destroyed it in 1832. While covered bridges are sometimes called kissing bridges, the real reason for the covering is to protect the bridge's truss design from the weather.