Pennsylvania - Role: Structure
| Monongahela Incline |
| Mount Vernon Furnace |
| Mt. Pleasant Covered Bridge |
| Muddy Creek Bridge, Maryland and Pennsylvania Railroad |
| Neff's Mill Covered Bridge |
| New Baltimore Bridge |
| New Germantown Covered Bridge |
| Newtown Creek Bridge |
| Ninth Street Bridge |
| Northampton County Bridge No. 15 |
| North Oriental Covered Bridge |
| Old Columbia-Wrightsville Bridge |
| Old Stone Arch Bridge |
| Original Little League Field |
| Osterburg Covered Bridge |
| Packsaddle Bridge |
| Parr's Mill Covered Bridge No. 10 |
| Passenger and Baggage Car No. 4639 |
| Passenger Coach No. 3556 |
| Passenger Day Coach No. 8177 |
| Passenger Locomotive No. 1223 |
| Passenger Locomotive No. 1737 |
| Passenger Locomotive No. 460 |
| Passenger Locomotive No. 7002 |
| Patterson Covered Bridge No. 112 |
| Pennsylvania Canal and Limestone Run Aqueduct |
| Pennsylvania Canal Guard Lock and Feeder Dam, Raystown Branch |
| Pennsylvania Main Line Canal, Juniata Division, Canal Section |
| Pennsylvania Railroad Bridge |
| Pennsylvania Railroad Bridge over Shavers Creek |
| Pennsylvania Railroad GG1 Streamlined Electric Locomotive #4859 |
| Pennsylvania Railroad Old Bridge over Standing Stone Creek |
| Perkiomen Bridge |
| Pine Bank Covered Bridge |
| Pine Grove Covered Bridge |
| Pinetown Covered Bridge |
| Pine Valley Covered Bridge |
| Pithole Stone Arch |
| Plant's Covered Bridge |
| Pleasantville Bridge |
| Pond Eddy Bridge |
| Pond Mill Bridge |
| Pool Forge Covered Bridge |
| Quaker Bridge |
| Ralston Freeman Covered Bridge |
| Ramp Covered Bridge |
| Rapp's Bridge |
| Reading Company Grain Elevator |
| Reading-Halls Station Bridge |
| Red Covered Bridge |
| Red Run Covered Bridge |
| Rex Covered Bridge |
| Rice Covered Bridge |
| Richards Covered Bridge |
| Ridge Avenue Bridge in Philadelphia |
| Ridge Road Bridge, Stewartstown Railroad |
| Riegel Covered Bridge No. 6 |
| Rishel Covered Bridge |
| Rittenhouse Square |
| Rockland Furnace |
| Rockville Bridge |
| Rohrbach Covered Bridge No. 24 |
| Ross Furnace |
| Rotunda of the Pennsylvania Railroad Station |
| Runk Bridge |
| Rupert Covered Bridge No. 56 |
| Ryot Covered Bridge |
| Sauck's Covered Bridge |
| Saville Covered Bridge |
| Sawhill Covered Bridge |
| """S"" Bridge" |
| S Bridge |
| Schlicher Covered Bridge |
| Schuylkill County Bridge No. 113 |
| Schuylkill County Bridge No. 114 |
| Scott Covered Bridge |
| Scott Creek Bridge-North, Maryland and Pennsylvania Railroad |
| Second Street Bridge |
| Seigrist's Mill Covered Bridge |
| Seventh Street Bridge |
| Shaffer's Bridge |
| Sheard's Mill Covered Bridge |
| Shearer's Covered Bridge |
| Shenk's Mill Covered Bridge |
| Shoemaker Covered Bridge |
| Shriver Covered Bridge |
| Sixteenth Street Bridge |
| Sixth Street Bridge |
| Skippack Bridge |
| Smithfield Street Bridge |
| Smith, William, House |
| Snooks Covered Bridge |
| Snyder Covered Bridge No. 17 |
| Soldiers and Sailors Memorial Bridge |
| Sonestown Covered Bridge |
| South Perkasie Covered Bridge |
| South Road Bridge, Northern Central Railway |
| South Tenth Street Bridge |
| Speakman No. 1 |
| Speakman No. 2, Mary Ann Pyle Bridge |
Data from United States Park Service and Wikidata
