Power House Covered Bridge in Johnson, Vermont, carries School Street over the Gihon River and is one of three surviving 19th-century bridges in the town. Built in 1870, or possibly 1872, by an unknown builder, it is a single-span Queen post truss covered bridge later named for a nearby hydroelectric station. Listed on the National Register of Historic Places in 1974, it underwent repairs over time and gained steel I-beams after engineers warned of strain from truck traffic. Those beams proved vital in 2000, when heavy snow caused the roof and side walls to collapse but left the deck standing, allowing the bridge to be rebuilt and reopened in 2002.