Bridge conditions in Sullivan County, Pennsylvania
118 inventoried bridges · 10 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Sullivan County tracks close to typical: 10 of its 118 inventoried bridges (8.5%) are rated poor, against a national rate of about 7%.
- 10 of the 118 bridges in Sullivan County, Pennsylvania, are rated in poor condition (8.5%) in the 2025 National Bridge Inventory, as of .
- 52 bridges (44.1%) are rated good and 56 (47.5%) fair.
- The median Sullivan County bridge was built in 1970.
- The busiest poor-rated bridge is SR 4012 over Loyalsock Creek (built 1850), carrying about 113 vehicles a day.
Good 44.1% · Fair 47.5% · Poor 8.5% of 118 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 4012 over Loyalsock Creek | 1850 | 113 | Poor |
| T-328 over Muncy Creek | 1942 | 108 | Poor |
| T-359 over Little Loyalsock Creek | 1933 | 100 | Poor |
| Cabin Road over Loyalsock Creek | 1983 | 100 | Poor |
| T-410 over N. Br. Mehoopany Creek | 1925 | 50 | Poor |
| T-346 over Kings Creek | 1925 | 50 | Poor |
| T-416 over Porter Creek | 1930 | 50 | Poor |
| T-460 over Lick Creek | 1920 | 30 | Poor |
| Cherry Twp T-474 over Little Loyalsock Creek | 1901 | 30 | Poor |
| Rock Run Road over Loyalsock Creek | 1897 | 15 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 220 over over Muncy Creek | 1975 | 3,494 | Fair |
| US 220 over Little Loyalsock Creek | 2014 | 3,218 | Good |
| Pa 87 over Little Loyalsock Creek | 1967 | 2,720 | Fair |
| S.R. 220 over Mill Creek | 1929 | 2,685 | Fair |
| S.R. 220 over over Loyalsock Creek | 1984 | 2,685 | Fair |
| SR 220 over over Marsh Creek | 1925 | 2,670 | Fair |
| SR 0220 over over Outlet Creek | 1973 | 2,415 | Fair |
| SR 87 over over Little Loyalsock Ck | 1997 | 1,608 | Good |
| SR 0087 over Little Loyalsock Creek | 1935 | 1,472 | Fair |
| SR 0087 over Loyalsock Creek | 1937 | 1,100 | 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.