I 55 over Slough
FairLincoln County, Mississippi · 8.4 MI N US 84 · Structure no. 11000550430463A
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Concrete
- Length
- 50 ft
- 2 main spans
- Daily traffic
- 10,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 55 over Slough is a concrete culvert carrying I 55 over Slough in Lincoln County, Mississippi. It was built in 1966, so it is 59 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 10,500 vehicles a day, roughly 30% of them trucks, projected to reach 14,000 by 2043. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 55 over Slough built?
It was built in 1966, making it 59 years old in 2025.
What condition is I 55 over Slough 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 February 2025.
How much traffic does I 55 over Slough carry?
About 10,500 vehicles per day (2023 count), of which roughly 30% are trucks.
How long is I 55 over Slough?
The structure is 50 ft (15.2 m) long with a longest span of 20 ft (6.1 m).
Who owns I 55 over Slough?
It is owned by the State Highway Agency.