SR 18 over Slough
GoodSmith County, Mississippi · 3.6 MI W SR 35 · Structure no. 310001806510520
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected August 2023
- Type
- Culvert
- Concrete
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 2,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 18 over Slough is a concrete culvert carrying SR 18 over Slough in Smith County, Mississippi. It was built in 1972, so it is 53 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 2,300 vehicles a day, roughly 18% of them trucks, projected to reach 2,400 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 46 mi (74 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 18 over Slough built?
It was built in 1972, making it 53 years old in 2025.
What condition is SR 18 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 August 2023.
How much traffic does SR 18 over Slough carry?
About 2,300 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is SR 18 over Slough?
The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m).
Who owns SR 18 over Slough?
It is owned by the State Highway Agency.