Fortification ST over I 55
FairHinds County, Mississippi · 2.6 MI N I 20 · Structure no. 51000550250957B
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected June 2024
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 340 ft
- 4 main spans
- Daily traffic
- 8,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Fortification ST over I 55 is a concrete continuous box beam or girders - single or spread carrying Fortification ST over I 55 in Hinds County, Mississippi. It was built in 1967, so it is 58 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 5 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 8,000 vehicles a day, roughly 3% of them trucks, projected to reach 8,000 by 2043. The structure is 340 ft (103.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Fortification ST over I 55 built?
It was built in 1967, making it 58 years old in 2025.
What condition is Fortification ST over I 55 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 June 2024.
How much traffic does Fortification ST over I 55 carry?
About 8,000 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Fortification ST over I 55?
The structure is 340 ft (103.6 m) long with a longest span of 91 ft (27.7 m) and a deck 33 ft wide.
Who owns Fortification ST over I 55?
It is owned by the State Highway Agency.