Covered bridges aren't common, but an unusual one is in Prestonsburg KY, on the paved Prestonsburg Passage Rail Trail. The trail is open to pedestrians, bikers, and horseback riders and is built in a former railroad bed.

Beginning in Archer Park, this trail will take you through West Prestonsburg, underneath Rt 114 and into David. You will travel across 6 different bridges including one unique bridge that is topped with a school bus donated by the Floyd County School District.

At the 6:25 mark and the 10 minute mark on this video

https://wkdq.com/kentucky-is-home-to-the-most-unique-covered-bridge-in-the-country

https://transportation.ky.gov/BikeWalk/Pages/Home%20Page.aspx