The Bunker Hill Covered Bridge was constructed in 1895 and is the only remaining example of an Improved Lattice Truss Timber Bridge designed by Gen. Herman Haupt. Gen. Haupt patented this type of bridge design in 1839. When recently traveling in North Carolina I saw a sign for this historic bridge and having extra time before I needed to be at my destination, I decide get off the highway and explore this site. My biggest disappointment was the damage done by graffiti on this bridge. I can not understand why anyone would want to harm any type of historic site.