Where I Run: Stone Bridge

One of my road routes from the house is along the appropriately named Stone Bridge Road--so named for the 2-arched limestone bridge that there crosses the East Branch of the Conococheague Creek:

View from the downstream side

View from the upstream side

These images show that there is a modern, two-lane concrete bridge superstructure superimposed upon the underlying original 1-lane, 2-arch limestone bridge. 

Most people know little of the underpinnings of society--what makes things work--and I suspect this bridge falls into the same category.  I doubt whether even half the people who use it every day even know that they are driving on an antique (but fully functional) structure.

This is what the circa-1850 bridge would have looked like originally.  This photo is of the nearby Social Island Road bridge, from a way cool site called Bridgehunter: