Bridge conditions in Union County, Pennsylvania
164 inventoried bridges · 7 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
7 of the 164 bridges the federal inventory lists in Union County are rated poor; the rest split 86 good and 71 fair.
- 7 of the 164 bridges in Union County, Pennsylvania, are rated in poor condition (4.3%) in the 2025 National Bridge Inventory, as of .
- 86 bridges (52.4%) are rated good and 71 (43.3%) fair.
- The median Union County bridge was built in 1970.
- The busiest poor-rated bridge is SR 3012 over over Sweitzers Run (built 1948), carrying about 1,383 vehicles a day.
Good 52.4% · Fair 43.3% · Poor 4.3% of 164 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 3012 over over Sweitzers Run | 1948 | 1,383 | Poor |
| SR 2001 over Buffalo Creek | 1960 | 586 | Poor |
| T-376 Cty Br. 20 over Buffalo Creek | 1900 | 150 | Poor |
| T-357 over N. Br. Buffalo Creek | 1900 | 119 | Poor |
| T-428 (cty Br 6) over Spruce Run | 1925 | 54 | Poor |
| T-421 (cty. Br. 2) over White Deer Hole Creek | 1889 | 13 | Poor |
| T-319 Red Bridge over Penns Creek | 1855 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR0015 over Buffalo Creek | 1930 | 21,561 | Fair |
| US 15 NB and SB over Trib Susquehanna River | 2002 | 17,555 | Good |
| US Tr 15 over over Winfield Creek | 1930 | 17,492 | Fair |
| SR 15 Nbl & Sbl over over White Deer Creek | 1963 | 17,258 | Good |
| SR 0015 (tr 15) over over S.R. 1010 | 1963 | 17,101 | Fair |
| I-80 WB over over US 15 NB & SB | 1962 | 16,130 | Good |
| SR 0080 WB over over SR1011&UN.CO.IND.RR | 1962 | 16,130 | Good |
| I-80 EB over over US 15 Nb/sb | 1962 | 16,007 | Good |
| I - 80 EB over over SR1011&UN.CO.IND.RR | 1962 | 16,007 | Good |
| SR 15 over over SR 1004 | 1964 | 15,796 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Pennsylvania: Pennsylvania bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.