Derthick Rd over Mud Fork
Athens County, Ohio · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Derthick Rd over Mud Fork in Athens County, Ohio, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1951, making it 74 years old at the 2025 inventory.
- It carries about 60 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 125 of the 305 inventoried bridges in Athens County rated fair (41.0%); 16 (5.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 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 → (39.49749, -82.10435)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 30 ft |
| Location | 1 Mi South of SR 78 |
| NBI structure number | 0540900 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 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 Athens County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Richland Avenue over Hocking River | 1969 | 15,289 | Fair |
| W Interchange C133 over Dorr Run | 2010 | 14,810 | Good |
| Usr 50 over Stream | 1987 | 14,544 | Good |
| Usr 50 over Richland Avenue | 1979 | 14,535 | Good |
| Usr 50 over E State&hock-adena Bkwy | 1975 | 14,063 | Good |
| Usr 50 over Estate&hock-adena Bkwy | 1975 | 14,063 | Good |
All bridges nearby: Athens County, OH bridge conditions · every bridge in Athens County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.