Clayton Rd over Bohnke Drain
Allen County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Clayton Rd over Bohnke Drain in Allen County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 156 vehicles a day (traffic count year 2018).
- Its listed owner is the county highway agency.
- It is one of 313 of the 615 inventoried bridges in Allen County rated fair (50.9%); 45 (7.3%) 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 May 2024, on a 24-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 → (40.96396, -84.90076)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete multiple box beam |
| Length | about 67 ft |
| Location | 00.10 N Flatrock Rd |
| NBI structure number | 0200236 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 24 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 Indiana department of transportation.
Busiest bridges in Allen County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-69 over Durnell Ditch | 1961 | 59,380 | Fair |
| I-469 over Martin Ditch | 1995 | 44,507 | Good |
| I-469 over Swift Ditch | 1995 | 44,507 | Fair |
| W Jefferson Blvd over Moorman Drain | 1948 | 38,000 | Fair |
| W Jefferson Blvd over Natural Drain | 1930 | 38,000 | Fair |
| I-69 over Graham Mccullough Dit #4 | 1964 | 36,360 | Good |
All bridges nearby: Allen County, IN bridge conditions · every bridge in Allen County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.