US 49W over Atchafalaya Bayou
GoodHumphreys County, Mississippi · 7.4 MI N Yazoo Cl · Structure no. 21000494272187B
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected January 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 474 ft
- 3 main spans
- Daily traffic
- 3,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 49W over Atchafalaya Bayou is a prestressed concrete continuous stringer/multi-beam or girder carrying US 49W over Atchafalaya Bayou in Humphreys County, Mississippi. It was built in 2004, so it is 21 years old, younger than the Mississippi average of 38.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 3,100 vehicles a day, roughly 15% of them trucks, projected to reach 3,800 by 2043. The structure is 474 ft (144.5 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 49W over Atchafalaya Bayou built?
It was built in 2004, making it 21 years old in 2025.
What condition is US 49W over Atchafalaya Bayou in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.
How much traffic does US 49W over Atchafalaya Bayou carry?
About 3,100 vehicles per day (2023 count), of which roughly 15% are trucks.
How long is US 49W over Atchafalaya Bayou?
The structure is 474 ft (144.5 m) long with a longest span of 79 ft (24 m) and a deck 42 ft wide.
Who owns US 49W over Atchafalaya Bayou?
It is owned by the State Highway Agency.