Smith Co. 21 over Lyon Creek
GoodSmith County, Mississippi · Sec 19 T10N R14W B · Structure no. SA6500000000122
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected September 2023
- Type
- Culvert
- Concrete
- Length
- 35 ft
- 2 main spans
- Daily traffic
- 120
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Smith Co. 21 over Lyon Creek is a concrete culvert carrying Smith Co. 21 over Lyon Creek in Smith County, Mississippi. It was built in 1995, so it is 30 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 120 vehicles a day, roughly 10% of them trucks, projected to reach 180 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 5 mi (8 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Smith Co. 21 over Lyon Creek built?
It was built in 1995, making it 30 years old in 2025.
What condition is Smith Co. 21 over Lyon Creek 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 September 2023.
How much traffic does Smith Co. 21 over Lyon Creek carry?
About 120 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Smith Co. 21 over Lyon Creek?
The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m).
Who owns Smith Co. 21 over Lyon Creek?
It is owned by the County Highway Agency.