User:Ruhrfisch/Frog1

Stone arch bridges
There are 58 stone arch bridges included in the group, 49 of which have construction dates which can be documented. The oldest of these is the Frankford Avenue Bridge in Philadelphia, which was built in 1697 and is "the oldest known stone arch bridge in the United States which still carries traffic".

Three of the stone arch bridges were already included on the NRHP within historic districts: the Belmont Avenue Bridge in Philadelphia, and the Bridge in Solebury Township and the Newtown Creek Bridge, both in Bucks County. Two of this group have been removed from the NRHP after their destruction: the Bridge in Ridley Park Borough in Delaware County, and the Bridge in Plunkett's Creek Township in lycoming County.

Metal Truss Bridges

 * T-35, Washingtonville Bridge, LR 47036, Montour County, 1887, moved 1986 - not on big PA NRHP list and not in ARCH
 * T-48 is commented out on big PA NRHP bridge list, but is listed in ARCH

Metal Arch Bridges
MA-5 Mifflin Road Bridge, LR 02376 in Allegheny County is MIA - was it even listed on the NRHP?

Suspension Bridge
SU-2 Kellams Bridge LR 966 Wayne County, PA and Sullivan COunty, NY not found