SR 15 over Back Creek
Grant County, Indiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 15 over Back Creek in Grant County, Indiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1938 and reconstructed in 1964, making it 87 years old at the 2025 inventory.
- It carries about 8,754 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 109 of the 280 inventoried bridges in Grant County rated good (38.9%); 4 (1.4%) are rated poor.
- 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 → (40.4896, -85.62807)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 73 ft |
| Location | 00.05 N SR 22 |
| NBI structure number | 003890 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Grant County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Wheeling Pike over Barren Creek | 1940 | 57,630 | Fair |
| I-69 NB over SR 18 Eb/wb | 2019 | 31,070 | Good |
| SR 9 over NS RR Trail | 1940 | 23,655 | Good |
| SR 9 over Boots Creek | 1999 | 22,538 | Fair |
| US 35 SR 22 over Mississinewa River | 1964 | 16,102 | Fair |
| I-69 SB over NS RR CR 450 N | 1963 | 15,649 | Good |
All bridges nearby: Grant County, IN bridge conditions · every bridge in Grant County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.