US-31W over Nolin River
Hardin County, Kentucky · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-31W over Nolin River in Hardin County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1930, making it 95 years old at the 2025 inventory.
- It carries about 2,594 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 111 of the 221 inventoried bridges in Hardin County rated fair (50.2%); 8 (3.6%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2024, on a 24-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 → (37.56472, -85.86889)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 265 ft |
| Location | .5 Mi S of Jct Ky 1136 |
| NBI structure number | 047B00030N |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2024 |
| 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 Kentucky department of transportation.
Busiest bridges in Hardin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-65 over Valley Creek | 1956 | 68,858 | Fair |
| Interstate 65 Ramp over US 31W (under S.b.connec | 1983 | 68,858 | Fair |
| I-65 over Town Branch | 1956 | 60,000 | Good |
| I-65 over East Rhudes Creek | 1958 | 53,566 | Good |
| I 65 over Rhudes Creek Road | 2018 | 53,566 | Good |
| I-65 over Clear Creek | 1983 | 51,705 | Fair |
All bridges nearby: Hardin County, KY bridge conditions · every bridge in Hardin County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.