171ST St East over Cool Creek
Hamilton County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 171ST St East over Cool Creek in Hamilton County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1983, making it 42 years old at the 2025 inventory.
- It carries about 1,360 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 134 of the 460 inventoried bridges in Hamilton County rated fair (29.1%); 11 (2.4%) are rated poor.
- 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 → (40.03672, -86.11599)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Timber slab |
| Length | about 25 ft |
| Location | 00.70 E of Union St |
| NBI structure number | 2900217 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Hamilton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-465 over Monon Greenway | 2010 | 129,425 | Good |
| 96TH St East over White River | 1996 | 80,300 | Fair |
| US 31 over Stanbrough Creek | 2014 | 75,763 | Good |
| US 31 NB over Unt Cool Creek | 2014 | 75,763 | Good |
| US 31 SB over Unt Cool Creek | 2014 | 75,763 | Good |
| US 31 NB over 151ST Street | 2013 | 75,763 | Good |
All bridges nearby: Hamilton County, IN bridge conditions · every bridge in Hamilton County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.