Bridge conditions in Marion County, Ohio
230 inventoried bridges · 9 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Marion County tracks close to typical: 9 of its 230 inventoried bridges (3.9%) are rated poor, against a national rate of about 7%.
- 9 of the 230 bridges in Marion County, Ohio, are rated in poor condition (3.9%) in the 2025 National Bridge Inventory, as of .
- 139 bridges (60.4%) are rated good and 82 (35.7%) fair.
- The median Marion County bridge was built in 1976.
- The busiest poor-rated bridge is SR 231 over over US-23 (built 1968), carrying about 1,476 vehicles a day.
Good 60.4% · Fair 35.7% · Poor 3.9% of 230 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 231 over over US-23 | 1968 | 1,476 | Poor |
| SR 203 over Battle Run | 1984 | 1,410 | Poor |
| SR 37 over Scioto River | 1950 | 699 | Poor |
| SR 746 over Olentangy River | 1955 | 605 | Poor |
| County Road 148 over Br over Riffle Creek | 1965 | 504 | Poor |
| Township Road 160 over Mc Kibben Ditch | 1965 | 324 | Poor |
| County Road 026Y over Br over Flat Run | 1981 | 319 | Poor |
| CR 26 over over Usr 23-1692 | 1967 | 210 | Poor |
| County Road 114I over Br over Flat Run West | 1955 | 58 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 95 over Graves Creek | 1965 | 23,882 | Fair |
| SR 309 over Grave Creek | 1998 | 13,059 | Good |
| US 23 over over Sr98-0011 | 1965 | 11,517 | Good |
| US 23 over over Sr98-0013 | 1965 | 11,517 | Good |
| US 23 over Cauquaw CR | 1965 | 11,517 | Good |
| US 23 over Cauquaw CR | 1965 | 11,517 | Good |
| US 23 over over SR 309-1928 | 1968 | 10,986 | Good |
| Usr 23 over over SR 309-1930 | 1968 | 10,986 | Good |
| County Road 138-b over Norfolk Southern Railway | 2006 | 10,855 | Good |
| US 23 over over 95 1789 | 1968 | 10,745 | 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.