Not strictly a stone arch bridge, this one is incredibly pleasing to the eye. Designed by a White Man with an eye for Beauty, the craftsmanship of the spic or the feral is conspicuous by it's absence...

Boulder Bridge carried the road across Rock Creek upstream from the Blagden Mill site where the mill dam had been. Designed by W. J. Douglas and built in 1902 for $17,636, the reinforced concrete arch was faced with large fieldstones gathered from outside the park. The bridge blended admirably with its surroundings and survives as an outstanding specimen of naturalistic "parkitecture."