US 31 NB over Big Blue River
FairJohnson County, Indiana · 00.29 S SR 252 · Structure no. 009310
- Built
- 1950
- 75 years old, rebuilt 2007
- Condition
- Fair
- inspected November 2024
- Type
- Arch - Deck
- Concrete
- Length
- 426 ft
- 4 main spans
- Daily traffic
- 6,849
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 31 NB over Big Blue River is a concrete arch - deck carrying US 31 NB over Big Blue River in Johnson County, Indiana. It was built in 1950 and reconstructed in 2007, so it is 75 years old, older than the Indiana average of 46.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 6,849 vehicles a day, roughly 5% of them trucks, projected to reach 7,260 by 2026. The structure is 426 ft (129.8 m) long and 39 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 31 NB over Big Blue River built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2007.
What condition is US 31 NB over Big Blue River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.
How much traffic does US 31 NB over Big Blue River carry?
About 6,849 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is US 31 NB over Big Blue River?
The structure is 426 ft (129.8 m) long with a longest span of 80 ft (24.3 m) and a deck 39 ft wide.
Who owns US 31 NB over Big Blue River?
It is owned by the State Highway Agency.