The Chamberlin Mill Covered Bridge, also called Chamberlin Covered Bridge or Whitcomb Covered Bridge, is a covered bridge that crosses the South Wheelock Branch of the Passumpsic River in Lyndon, Vermont.The Chamberlin Mill Covered Bridge was built in 1881 and named for a nearby grist mill.The bridge is 69 feet (21.0 m) long and 16 feet 6 inches (5.03 m) wide.The bridge was added to the National Register of Historic Places in 1974.