Looks as though the builders planned for loads of hay to travel this way...
Covered Bridge Mountain Air Country Club - Burnsville, NC Yurko Design and Architecture, Asheville NC
Vermont covered bridges
Humpback Covered Bridge, Alleghany County, Virginia. #DidYouKnow? The bridge is one of the few remaining covered bridges in the U.S. that was built higher in the middle than on either end; hence the name of "humpback"!