Tr 509 over Ir 77
Washington County, Ohio · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Tr 509 over Ir 77 in Washington County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 351 vehicles a day (traffic count year 2015).
- Its listed owner is the state highway agency.
- It is one of 170 of the 306 inventoried bridges in Washington County rated good (55.6%); 34 (11.1%) 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 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (39.51213, -81.45468)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 259 ft |
| Location | 1.9M N Int. of SR 821 |
| NBI structure number | 8403244 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 7 over Duck Creek | 1966 | 24,836 | Good |
| Ir 77 over Ohio River CR 1 & CSX | 1965 | 19,477 | Fair |
| Ir 77 over Walking Path (pipe) | 1967 | 19,477 | Fair |
| Wv-618 over Ohio River WV 14 & CSX | 1980 | 16,602 | Fair |
| Usr 50 over SR 618 | 1964 | 15,419 | Good |
| Ir 77 over SR 7 | 1967 | 15,399 | Fair |
All bridges nearby: Washington County, OH bridge conditions · every bridge in Washington County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.