Checked
Pennsylvania Bridge Conditions
Highway bridges longer than 20 feet in the 2025 National Bridge Inventory
Yearly inspection ratings. A poor rating does not mean a bridge is unsafe to use.
- Highway bridges
- 23,314
- Good condition
- 34.4%
- 8,019
- Poor condition
- 12.1%
- 2,813
- Weight-limited or closed
- 1,974
Bridges by county
| County | Bridges | Good | Poor | Weight-limited | Avg. year built |
|---|---|---|---|---|---|
| Adams County | 254 | 36.6% | 7.1% (18) | 18 | 1973 |
| Allegheny County | 1,296 | 29.9% | 9.3% (120) | 42 | 1967 |
| Armstrong County | 259 | 35.1% | 6.9% (18) | 12 | 1979 |
| Beaver County | 296 | 41.2% | 9.5% (28) | 10 | 1972 |
| Bedford County | 418 | 30.9% | 8.6% (36) | 29 | 1966 |
| Berks County | 667 | 22.2% | 15.4% (103) | 60 | 1963 |
| Blair County | 338 | 36.4% | 11.5% (39) | 24 | 1976 |
| Bradford County | 400 | 44.5% | 9.5% (38) | 29 | 1971 |
| Bucks County | 695 | 24.5% | 14% (97) | 73 | 1958 |
| Butler County | 374 | 29.7% | 13.6% (51) | 25 | 1975 |
| Cambria County | 285 | 36.5% | 6.3% (18) | 13 | 1976 |
| Cameron County | 63 | 41.3% | 7.9% (5) | 2 | 1980 |
| Carbon County | 134 | 20.9% | 17.2% (23) | 12 | 1961 |
| Centre County | 366 | 48.1% | 6% (22) | 8 | 1983 |
| Chester County | 682 | 25.7% | 13.2% (90) | 77 | 1964 |
| Clarion County | 172 | 27.3% | 7% (12) | 16 | 1975 |
| Clearfield County | 294 | 38.8% | 14.3% (42) | 21 | 1972 |
| Clinton County | 212 | 42% | 1.9% (4) | 3 | 1979 |
| Columbia County | 272 | 42.6% | 9.9% (27) | 30 | 1965 |
| Crawford County | 401 | 34.4% | 17.7% (71) | 42 | 1966 |
| Cumberland County | 365 | 39.2% | 5.8% (21) | 13 | 1973 |
| Dauphin County | 448 | 21.4% | 9.2% (41) | 5 | 1973 |
| Delaware County | 389 | 24.9% | 11.1% (43) | 14 | 1969 |
| Elk County | 126 | 40.5% | 10.3% (13) | 10 | 1973 |
| Erie County | 444 | 37.6% | 9.5% (42) | 22 | 1976 |
| Fayette County | 419 | 41.1% | 17.2% (72) | 51 | 1972 |
| Forest County | 72 | 34.7% | 13.9% (10) | 7 | 1973 |
| Franklin County | 292 | 26.7% | 8.9% (26) | 21 | 1965 |
| Fulton County | 159 | 33.3% | 11.3% (18) | 7 | 1967 |
| Greene County | 306 | 37.3% | 15.4% (47) | 38 | 1967 |
| Huntingdon County | 239 | 40.6% | 10% (24) | 21 | 1967 |
| Indiana County | 301 | 30.9% | 17.9% (54) | 13 | 1973 |
| Jefferson County | 201 | 29.4% | 7% (14) | 5 | 1972 |
| Juniata County | 169 | 30.8% | 13% (22) | 15 | 1969 |
| Lackawanna County | 361 | 38% | 15% (54) | 27 | 1974 |
| Lancaster County | 801 | 30.2% | 10.9% (87) | 65 | 1973 |
| Lawrence County | 266 | 47.4% | 11.3% (30) | 12 | 1978 |
| Lebanon County | 229 | 28.8% | 9.2% (21) | 11 | 1972 |
| Lehigh County | 378 | 29.9% | 10.8% (41) | 33 | 1967 |
| Luzerne County | 458 | 30.3% | 22.5% (103) | 30 | 1973 |
| Lycoming County | 485 | 52.2% | 3.9% (19) | 23 | 1975 |
| McKean County | 226 | 44.7% | 17.7% (40) | 28 | 1981 |
| Mercer County | 437 | 41% | 14.9% (65) | 31 | 1972 |
| Mifflin County | 196 | 41.3% | 11.7% (23) | 7 | 1975 |
| Monroe County | 316 | 27.2% | 19% (60) | 32 | 1967 |
| Montgomery County | 830 | 31.9% | 11.6% (96) | 39 | 1968 |
| Montour County | 108 | 50% | 5.6% (6) | 5 | 1968 |
| Northampton County | 354 | 31.9% | 8.2% (29) | 22 | 1971 |
| Northumberland County | 298 | 42.6% | 6.7% (20) | 18 | 1964 |
| Perry County | 184 | 33.7% | 12.5% (23) | 21 | 1966 |
| Philadelphia County | 587 | 24.5% | 12.6% (74) | 36 | 1958 |
| Pike County | 158 | 36.7% | 23.4% (37) | 26 | 1973 |
| Potter County | 206 | 45.1% | 12.1% (25) | 11 | 1980 |
| Schuylkill County | 369 | 21.1% | 26.6% (98) | 59 | 1961 |
| Snyder County | 163 | 48.5% | 5.5% (9) | 7 | 1967 |
| Somerset County | 455 | 33.6% | 13.2% (60) | 41 | 1970 |
| Sullivan County | 118 | 44.1% | 8.5% (10) | 10 | 1968 |
| Susquehanna County | 286 | 37.8% | 17.8% (51) | 28 | 1970 |
| Tioga County | 431 | 49.4% | 3.2% (14) | 18 | 1977 |
| Union County | 164 | 52.4% | 4.3% (7) | 8 | 1970 |
| Venango County | 189 | 37% | 14.3% (27) | 19 | 1970 |
| Warren County | 218 | 35.3% | 17.4% (38) | 17 | 1974 |
| Washington County | 655 | 39.4% | 11.6% (76) | 68 | 1972 |
| Wayne County | 257 | 28.4% | 28.4% (73) | 37 | 1968 |
| Westmoreland County | 618 | 37.2% | 15.7% (97) | 55 | 1976 |
| Wyoming County | 139 | 40.3% | 21.6% (30) | 12 | 1973 |
| York County | 566 | 32.5% | 10.8% (61) | 37 | 1973 |
Frequently asked questions
- How many bridges in Pennsylvania are in poor condition?
- In the 2025 National Bridge Inventory, 2,813 of 23,314 highway bridges in Pennsylvania were rated poor (12.1% of rated bridges).
- Which Pennsylvania counties have the most bridges in poor condition?
- Among counties with at least 30 bridges, the highest shares rated poor are Wayne County (28.4%), Schuylkill County (26.6%), Pike County (23.4%), Luzerne County (22.5%), Wyoming County (21.6%).
Source: Federal Highway Administration, National Bridge Inventory · 2025 data