Pennsylvania - Role: Structure
| Sprowl's Covered Bridge |
| SS UNITED STATES (Steamship) |
| Staple Bend Tunnel |
| Starrucca Viaduct |
| Steel Hopper Car No. 33164 |
| Steel Passenger Coach No. 1650 |
| Steel Passenger Coach No. 1651 |
| Stephens, Linton, Covered Bridge |
| Stillwater Covered Bridge No. 134 |
| St. Mary's Covered Bridge |
| Stone Arch Road Bridge, Stewartstown Railroad |
| Sutch Road Bridge in Marlborough Township |
| Swamp Creek Road Bridge |
| Switcher No. 1670 |
| Switcher No. 94 |
| Thirty-third Street Bridge in Philadelphia |
| Thomas Covered Bridge |
| Thomas Mill Covered Bridge |
| Trenton City/Calhoun Street Bridge |
| Trostletown Bridge |
| Trusal Covered Bridge |
| Tunkhannock Viaduct |
| Twin Bridges-East Paden Covered Bridge No. 120 |
| Twin Bridges-West Paden Covered Bridge No. 121 |
| Union Canal Tunnel |
| University Avenue Bridge |
| USS BECUNA (SS-319) |
| U.S.S. NIAGARA |
| U.S.S. OLYMPIA |
| Valley Road Bridge, Stewartstown Railroad |
| Van Sant Covered Bridge |
| Waggoner Covered Bridge |
| Wagner Covered Bridge No. 19 |
| Walnut Street Bridge |
| Walnut Street Bridge |
| Walter's Mill Bridge |
| Wanich Covered Bridge No. 69 |
| Washington Square |
| Waterford Covered Bridge |
| Waterville Bridge |
| Watsontown River Bridge |
| Weaver's Mill Covered Bridge |
| Webster Donora Bridge |
| Wehr Covered Bridge |
| Welty's Mill Bridge |
| Weona Park Carousel |
| Wertz's Covered Bridge |
| West End-North Side Bridge |
| Western Division of the PA Canal |
| Western Division-Pennsylvania Canal |
| West Hickory Bridge |
| Westinghouse, George, Memorial Bridge |
| White Covered Bridge |
| White Rock Forge Covered Bridge |
| Wilson's Mill Covered Bridge |
| Wissahickon Memorial Bridge |
| Witherup Bridge |
| Wooden Baggage Express No. 6 |
| Wooden Express Baggage No. 6076 |
| Wooden Hopper Gondola No. 1818 |
| Woods, Nettie, Covered Bridge |
| Wright, Cerl, Covered Bridge |
| Wyit Sprowls Covered Bridge |
| Y Covered Bridge No. 156 |
| Yeakle's Mill Bridge |
| Zook's Mill Covered Bridge |
Data from United States Park Service and Wikidata
