Pennsylvania - Area of significance: Transportation
| Academia Pomeroy Covered Bridge |
| Adairs Covered Bridge |
| Aline Covered Bridge |
| Allegheny Portage Railroad National Historic Site |
| Allegheny River Locka and Dam No. 5 |
| Allegheny River Lock and Dam No. 2 |
| Allegheny River Lock and Dam No. 3 |
| Allegheny River Lock and Dam No. 4 |
| Allegheny River Lock and Dam No. 6 |
| Allegheny River Lock and Dam No. 7 |
| Allegheny River Lock and Dam No.8 |
| Allegheny River Lock and Dam No. 9 |
| Armstrong Tunnel |
| Ashley Planes |
| Askew Bridge |
| Bailey Covered Bridge |
| Baldwin-Reynolds House |
| Banks Covered Bridge |
| Barley Sheaf Inn |
| BARNEGAT (lightship) |
| Barronvale Bridge |
| Bartram's Covered Bridge |
| Baumgardner's Mill Covered Bridge |
| Beallsville Historic District |
| Bedford Historic District |
| Beechdale Bridge |
| Bells Mills Covered Bridge |
| Bergy Bridge Historic District |
| Big Bend Historical Area |
| Bistline Covered Bridge |
| Bittenbender Covered Bridge |
| Bitzer's Mill Covered Bridge |
| Black Horse Inn |
| Black Horse Tavern |
| Bloomsburg Historic District |
| Boalsburg Historic District |
| Bogert Covered Bridge |
| Bollman, W., and Company Bridge |
| Book's Covered Bridge |
| Boyce Station |
| Bridge 182+42, Northern Central Railway |
| Bridge 5+92, Northern Central Railway |
| Bridge 634, Northern Central Railway |
| Bridge in Heidelberg Township |
| Bridge in Johnstown City |
| Bridge in Portage Township |
| Bridge in Reed Township |
| Bridgewater Historic District |
| Bristol Historic District |
| Brockwayville Passenger Depot, Buffalo, Rochester and Pittsburgh Railroad |
| Brown, Gottlieb, Covered Bridge |
| Brownlee, Scott, Covered Bridge |
| Brownsville Commercial Historic District |
| Brush Hill |
| Bryn Athyn Historic District |
| Buck Hill Farm Covered Bridge |
| Buffalo, Rochester & Pittsburgh Railway Indiana Passenger Station |
| Burnt Cabins Historic District |
| Butcher's Mill Covered Bridge |
| Buttonwood Covered Bridge |
| Cabin Run Covered Bridge |
| Callowhill Industrial Historic District |
| Carbon County Section of the Lehigh Canal |
| Carmichaels Covered Bridge |
| Centerville Historic District |
| Central Railroad of New Jersey Freight Station |
| Central Railroad of New Jersey Station |
| Central Railroad of New Jersey Station |
| Chain Bridge |
| Chambersburg and Bedford Turnpike Road Company Toll House |
| Chandler Mill Bridge |
| Cogan House Covered Bridge |
| Colemanville Covered Bridge |
| Columbia Historic District |
| Combination Baggage and Mail Car No. 5403 |
| Connellsville Union Passenger Depot |
| Consolidation Freight Locomotive No. 1187 |
| Consolidation Freight Locomotive No. 2846 |
| Consolidation Freight Locomotive No. 7688 |
| Coopersburg Historic District |
| Cope's Bridge |
| Coraopolis Bridge |
| Coraopolis Railroad Station |
| Cornwall & Lebanon Railroad Station |
| Corry Historic District |
| Coudersport and Port Allegany Railroad Station |
| Crawford Covered Bridge |
| Creasyville Covered Bridge |
| Cumberland Valley Car |
| Cumberland Valley Railroad Station and Station Master's House |
| Cuppett's Covered Bridge |
| Damascus Historic District |
| Danley Covered Bridge |
| Davis Covered Bridge |
| Davis, Horn, Overholtzer Bridge |
| Davis Island Lock and Dam Site |
| Day Covered Bridge |
| DDI Electric Locomotive No. 36 |
| Deer Creek Bridge, Stewartstown Railroad |
| DeHaven, Harry, House |
Data from United States Park Service and Wikidata
