SR 166 over Sandy Branch
Perry County, Indiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 166 over Sandy Branch in Perry County, Indiana, 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 2001, making it 24 years old at the 2025 inventory.
- It carries about 102 vehicles a day (traffic count year 2004).
- Its listed owner is the state highway agency.
- It is one of 62 of the 149 inventoried bridges in Perry County rated good (41.6%); 3 (2.0%) 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 February 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 → (37.87047, -86.64181)
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 | Prestressed concrete single box beam |
| Length | about 51 ft |
| Location | 04.23 E SR 66 |
| NBI structure number | 028560 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2023 |
| 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 Perry County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-64 over Tige Creek | 1973 | 16,479 | Fair |
| I-64 Wbl over Sigler Creek | 1973 | 13,260 | Good |
| SR 237 over Castleberry Creek | 1965 | 11,538 | Fair |
| SR 237 over Ohio River 3 Sts RR | 1966 | 9,560 | Fair |
| SR 66 over Windy Creek | 1940 | 9,028 | Fair |
| I-64 Wbl over Middle Fk Anderson River | 1973 | 8,719 | Good |
All bridges nearby: Perry County, IN bridge conditions · every bridge in Perry County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.