Ackley Covered Bridge

The Ackley Covered Bridge began its life nowhere near Michigan. Built in 1832 by Joshua Ackley and Daniel Clouse, it originally carried traffic over Enlow Fork (a branch of Wheeling Creek) along the Greene-Washington county line in southwestern Pennsylvania, where it stood for more than a century. It's believed to be the oldest surviving multiple kingpost covered bridge in the United States, a distinction that nearly didn't survive the 1930s: when the aging bridge was slated for replacement in 1937, one of Joshua Ackley's own descendants stepped in and offered the historic structure to industrialist Henry Ford for his open-air history museum in Dearborn.

That winter, the 80-foot bridge was carefully dismantled in Pennsylvania and shipped to Greenfield Village, where it was rebuilt over a man-made pond and formally dedicated in July 1938. It has needed periodic attention ever since — repairs in 1974, stabilization work in 1999, and a fuller restoration in 2000 — but it remains one of Greenfield Village's most tangible pieces of pre-automotive American infrastructure, a bridge older than the state of Michigan itself now standing inside one of the country's best-known living history museums.