Mer Darke Co Ln Rd over Wabash River
Mercer County, Ohio · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mer Darke Co Ln Rd over Wabash River in Mercer County, Ohio, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, 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 695 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 173 of the 327 inventoried bridges in Mercer County rated fair (52.9%); 5 (1.5%) 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 → (40.35175, -84.6057)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 62 ft |
| Location | 1.6 Mi E of SR118 |
| NBI structure number | 5444403 |
| 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) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Mercer 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 |
All bridges nearby: Mercer County, OH bridge conditions · every bridge in Mercer County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.