US 90 over Bay ST Louis
GoodHancock County, Mississippi · Hancock/Harrison Cl · Structure no. 210009002301900
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 11,129 ft
- 3 main spans
- Daily traffic
- 16,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 90 over Bay ST Louis is a prestressed concrete continuous stringer/multi-beam or girder carrying US 90 over Bay ST Louis in Hancock County, Mississippi. It was built in 2008, so it is 17 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 16,000 vehicles a day, roughly 5% of them trucks, projected to reach 16,000 by 2043. The structure is 11,129 ft (3,392.1 m) long and 101 ft wide. If it were closed, the detour would be 59 mi (95 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 US 90 over Bay ST Louis built?
It was built in 2008, making it 17 years old in 2025.
What condition is US 90 over Bay ST Louis 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 July 2023.
How much traffic does US 90 over Bay ST Louis carry?
About 16,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is US 90 over Bay ST Louis?
The structure is 11,129 ft (3,392.1 m) long with a longest span of 250 ft (76.2 m) and a deck 101 ft wide.
Who owns US 90 over Bay ST Louis?
It is owned by the State Highway Agency.