US 231 over Iroquois River
Jasper County, Indiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 231 over Iroquois River in Jasper County, Indiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2018, making it 7 years old at the 2025 inventory.
- It carries about 4,930 vehicles a day (traffic count year 2011).
- Its listed owner is the state highway agency.
- It is one of 65 of the 189 inventoried bridges in Jasper County rated good (34.4%); 1 (0.5%) 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 July 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 → (41.0077, -87.15148)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 9 | 9 | Excellent condition |
Bridge details
| Structure | Continuous concrete single box beam |
| Length | about 131 ft |
| Location | 01.33 S SR 14 |
| NBI structure number | 029491 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 Jasper County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Wolcott Rdcr 1800 over I-65 Nb/sb | 1968 | 41,719 | Good |
| I-65 NB over Tp&w RR | 1968 | 41,719 | Fair |
| I-65 SB over Tp&w RR | 1968 | 41,719 | Fair |
| I-65 NB over Stover Main Ditch | 1966 | 33,690 | Good |
| I-65 SB over Stover Main Ditch | 1966 | 33,690 | Good |
| I-65 SB over CSX RR | 1966 | 21,777 | Good |
All bridges nearby: Jasper County, IN bridge conditions · every bridge in Jasper County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.