SR 66 S Jefferson over Auglaize River
Defiance County, Ohio · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 66 S Jefferson over Auglaize River in Defiance 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 1966, making it 59 years old at the 2025 inventory.
- It carries about 9,940 vehicles a day (traffic count year 2015).
- Its listed owner is the state highway agency.
- It is one of 32 of the 159 inventoried bridges in Defiance County rated fair (20.1%); 1 (0.6%) 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 April 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 → (41.26998, -84.36961)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 584 ft |
| Location | 1.2 mi. South of SR18 |
| NBI structure number | 2001500 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 7: scour countermeasures installed |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Defiance County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR15 over Maumee River | 2019 | 27,320 | Good |
| SR 15 over Norfolk & Western RR # | 1977 | 24,257 | Good |
| SR 66 over Usr 24 # | 2010 | 16,125 | Good |
| SR 15 over Auglaize River | 1991 | 13,870 | Fair |
| SR 15 over Usr 24 | 2007 | 10,150 | Good |
| SR 281 over Usr 24 | 2007 | 9,890 | Good |
All bridges nearby: Defiance County, OH bridge conditions · every bridge in Defiance County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.