I 110 over Biloxi Back Bay
FairHarrison County, Mississippi · 1.3 MI N US 90 · Structure no. 110011002400130
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected August 2024
- Type
- Movable - Bascule
- Steel
- Length
- 5,728 ft
- 1 main span
- Daily traffic
- 32,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 110 over Biloxi Back Bay is a steel movable - bascule carrying I 110 over Biloxi Back Bay in Harrison County, Mississippi. It was built in 1973, so it is 52 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 32,000 vehicles a day, roughly 4% of them trucks, projected to reach 32,000 by 2043. The structure is 5,728 ft (1,745.9 m) long and 89 ft wide. If it were closed, the detour would be 8.7 mi (14 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 110 over Biloxi Back Bay built?
It was built in 1973, making it 52 years old in 2025.
What condition is I 110 over Biloxi Back Bay 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 August 2024.
How much traffic does I 110 over Biloxi Back Bay carry?
About 32,000 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is I 110 over Biloxi Back Bay?
The structure is 5,728 ft (1,745.9 m) long with a longest span of 250 ft (76.2 m) and a deck 89 ft wide.
Who owns I 110 over Biloxi Back Bay?
It is owned by the State Highway Agency.