An official Path Through History Site! Original construction from 1825 makes it the oldest existing covered bridge in the United States. One of three covered bridges in the state with horizontal siding. A single span of 53′ crossing Shadow Brook in Glimmerglass State Park. Displays a Burr Arch truss. Located 4.5 miles south of Rt. 20 on CR 31 to park entrance. Open for pedestrian traffic. Located in Glimmerglass State Park. Park rules/fees apply.