I 55 over US 51 & Cnic RR
FairMadison County, Mississippi · 0.3 MI N Hinds Cl · Structure no. 11000550451026A
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 469 ft
- 7 main spans
- Daily traffic
- 47,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 55 over US 51 & Cnic RR is a prestressed concrete stringer/multi-beam or girder carrying I 55 over US 51 & Cnic RR in Madison County, Mississippi. It was built in 1985, so it is 40 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 47,000 vehicles a day, roughly 6% of them trucks, projected to reach 47,000 by 2043. The structure is 469 ft (143 m) long and 76 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 55 over US 51 & Cnic RR built?
It was built in 1985, making it 40 years old in 2025.
What condition is I 55 over US 51 & Cnic RR 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 April 2024.
How much traffic does I 55 over US 51 & Cnic RR carry?
About 47,000 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is I 55 over US 51 & Cnic RR?
The structure is 469 ft (143 m) long with a longest span of 71 ft (21.6 m) and a deck 76 ft wide.
Who owns I 55 over US 51 & Cnic RR?
It is owned by the State Highway Agency.