CO RD 456 over Irby Mill Creek
GoodClarke County, Mississippi · Sec 20 T 4N R17E B · Structure no. SA1200000000123
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected December 2023
- Type
- Channel Beam
- Concrete
- Length
- 76 ft
- 4 main spans
- Daily traffic
- 100
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD 456 over Irby Mill Creek is a concrete channel beam carrying CO RD 456 over Irby Mill Creek in Clarke County, Mississippi. It was built in 1988, so it is 37 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2043. The structure is 76 ft (23.2 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD 456 over Irby Mill Creek built?
It was built in 1988, making it 37 years old in 2025.
What condition is CO RD 456 over Irby Mill 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 December 2023.
How much traffic does CO RD 456 over Irby Mill Creek carry?
About 100 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is CO RD 456 over Irby Mill Creek?
The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.
Who owns CO RD 456 over Irby Mill Creek?
It is owned by the County Highway Agency.