Bridge conditions in Mercer County, Ohio
327 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 327 bridges in Mercer County: 149 rated good, 173 fair, and 5 poor.
- 5 of the 327 bridges in Mercer County, Ohio, are rated in poor condition (1.5%) in the 2025 National Bridge Inventory, as of .
- 149 bridges (45.6%) are rated good and 173 (52.9%) fair.
- The median Mercer County bridge was built in 1996.
- The busiest poor-rated bridge is Siegrist Jutte Rd over Wabash River (built 1987), carrying about 1,194 vehicles a day.
Good 45.6% · Fair 52.9% · Poor 1.5% of 327 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 |
|---|---|---|---|
| Siegrist Jutte Rd over Wabash River | 1987 | 1,194 | Poor |
| Sharpsburg Road over Branch of Wabash River | 1965 | 723 | Poor |
| Rockford West Road over Big Blackcreek | 1985 | 272 | Poor |
| Huwer Road over Br of Mile Creek | 1993 | 235 | Poor |
| Erastus Durbin Rd over Big Run | 1911 | 172 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Usr-127 over Beaver Creek | 2008 | 9,767 | Good |
| Usr-127 over Coldwater Creek | 1950 | 9,115 | Good |
| Usr-127 over Dahlinghaus Ditch | 1950 | 6,978 | Good |
| Usr 33 over Eight Mile Creek | 1997 | 6,514 | Good |
| Usr 33 over Twelve Mile Creek | 1962 | 6,433 | Fair |
| Usr 33 over Branch Eight Mile Creek | 1972 | 6,433 | Good |
| Usr 33 over Branch Eight Mile Creek | 1997 | 6,308 | Good |
| Usr-127 over St.marys River Overflow | 1966 | 6,143 | Fair |
| Usr-127 over St.marys River | 1935 | 6,143 | Good |
| SR-219 over Coldwater Creek | 1928 | 5,813 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Ohio: Ohio 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.