CR23A Converse Rd over Big Darby
Union County, Ohio · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR23A Converse Rd over Big Darby in Union County, Ohio, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1983, making it 42 years old at the 2025 inventory.
- It carries about 431 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 64 of the 221 inventoried bridges in Union County rated fair (29.0%); 8 (3.6%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 12-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.11389, -83.26348)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 208 ft |
| Location | 0.3 MI EAST of PLAIN CITY |
| NBI structure number | 8030014 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Union County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 33 over Ramp over C-133 | 1988 | 39,548 | Good |
| Usr 33 over Ramp over SR245 | 1988 | 27,926 | Good |
| US 33 over over SR-161 | 1967 | 23,398 | Fair |
| US 33 over over SR-161 | 1967 | 23,398 | Good |
| US 33 over over CR 114 | 1966 | 23,286 | Fair |
| US 33 over over CR 114 | 1966 | 23,286 | Fair |
All bridges nearby: Union County, OH bridge conditions · every bridge in Union County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.