US 231 over Lower Limestone Creek
Putnam County, Indiana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 231 over Lower Limestone Creek in Putnam County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1966 and reconstructed in 2001, making it 59 years old at the 2025 inventory.
- It carries about 10,790 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 152 of the 293 inventoried bridges in Putnam County rated fair (51.9%); 51 (17.4%) 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 → (39.55343, -86.81082)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 85 ft |
| Location | 01.49 N I-70 |
| NBI structure number | 016000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Putnam County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-70 EB over Vermillion Creek | 1965 | 41,402 | Fair |
| I-70 WB over Vermillion Creek | 1965 | 41,402 | Fair |
| I-70 EB over US 231 Sb/nb | 1965 | 39,268 | Good |
| I-70 WB over US 231 Sb/nb | 1965 | 39,268 | Good |
| I-70 EB over CSX RR | 1965 | 36,717 | Fair |
| I-70 WB over Knight Road | 1966 | 34,117 | Fair |
All bridges nearby: Putnam County, IN bridge conditions · every bridge in Putnam County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.