I 55 over Slough
GoodCarroll County, Mississippi · 4.1 MI N Holmes Cl · Structure no. 11000550081699B
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 320 ft
- 8 main spans
- Daily traffic
- 8,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 55 over Slough is a prestressed concrete stringer/multi-beam or girder carrying I 55 over Slough in Carroll County, Mississippi. It was built in 1971, so it is 54 years old, older 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 8,000 vehicles a day, roughly 26% of them trucks, projected to reach 8,000 by 2043. The structure is 320 ft (97.5 m) long and 44 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 I 55 over Slough built?
It was built in 1971, making it 54 years old in 2025.
What condition is I 55 over Slough 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 December 2024.
How much traffic does I 55 over Slough carry?
About 8,000 vehicles per day (2023 count), of which roughly 26% are trucks.
How long is I 55 over Slough?
The structure is 320 ft (97.5 m) long with a longest span of 40 ft (12.2 m) and a deck 44 ft wide.
Who owns I 55 over Slough?
It is owned by the State Highway Agency.