US 49 over Big Black River Relief
FairMadison County, Mississippi · 4.9 MI N SR 22 · Structure no. 21000490451833A
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 282 ft
- 7 main spans
- Daily traffic
- 6,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 49 over Big Black River Relief is a prestressed concrete continuous stringer/multi-beam or girder carrying US 49 over Big Black River Relief in Madison County, Mississippi. It was built in 1974, so it is 51 years old, older than the Mississippi average of 38.9 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 6,000 vehicles a day, roughly 14% of them trucks, projected to reach 6,500 by 2043. The structure is 282 ft (86 m) long and 42 ft wide. If it were closed, the detour would be 13 mi (21 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 | 8 Very Good | No problems noted. |
| 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 49 over Big Black River Relief built?
It was built in 1974, making it 51 years old in 2025.
What condition is US 49 over Big Black River Relief 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 May 2024.
How much traffic does US 49 over Big Black River Relief carry?
About 6,000 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is US 49 over Big Black River Relief?
The structure is 282 ft (86 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.
Who owns US 49 over Big Black River Relief?
It is owned by the State Highway Agency.