The Cornish–Windsor Covered Bridge is a 155-year-old, two-span, timber Town lattice-truss, interstate, covered bridge that crosses the Connecticut River between Cornish, New Hampshire, and Windsor, Vermont. The original cost of construction was a mere $9,000. The bridge is 449'5" long and consists of two spans of 204'0" and 203'0". It has an overall width of 24'0"., a roadway width of 19'6", and a maximum vertical clearance of 12'9". It is posted for ten tons.
Until 2008, when the Smolen–Gulf Bridge opened in Ohio, it had been the longest covered bridge (still standing) in the United States.