US-31 SB over ST Joseph River
FairBerrien County, Michigan · 1.5 MI N of Old US-31 · Structure no. 000000000012753
- Built
- 1999
- 26 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 819 ft
- 7 main spans
- Daily traffic
- 5,465
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
US-31 SB over ST Joseph River is a prestressed concrete stringer/multi-beam or girder carrying US-31 SB over ST Joseph River in Berrien County, Michigan. It was built in 1999, so it is 26 years old, younger than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 5,465 vehicles a day, roughly 16% of them trucks, projected to reach 5,802 by 2018. The structure is 819 ft (249.7 m) long and 47 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-31 SB over ST Joseph River built?
It was built in 1999, making it 26 years old in 2025.
What condition is US-31 SB over ST Joseph 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 July 2024.
How much traffic does US-31 SB over ST Joseph River carry?
About 5,465 vehicles per day (2007 count), of which roughly 16% are trucks.
How long is US-31 SB over ST Joseph River?
The structure is 819 ft (249.7 m) long with a longest span of 118 ft (36.1 m) and a deck 47 ft wide.
Who owns US-31 SB over ST Joseph River?
It is owned by the State Highway Agency.