I 20 over Tonacana Creek
FairNewton County, Mississippi · 5.9 MI E SR 503 · Structure no. 11000200511212B
- Built
- 1962
- 63 years old, rebuilt 2010
- Condition
- Fair
- inspected February 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 155 ft
- 3 main spans
- Daily traffic
- 12,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 20 over Tonacana Creek is a prestressed concrete stringer/multi-beam or girder carrying I 20 over Tonacana Creek in Newton County, Mississippi. It was built in 1962 and reconstructed in 2010, so it is 63 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 12,000 vehicles a day, roughly 45% of them trucks, projected to reach 12,000 by 2043. The structure is 155 ft (47.2 m) long and 45 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 20 over Tonacana Creek built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2010.
What condition is I 20 over Tonacana Creek 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 February 2023.
How much traffic does I 20 over Tonacana Creek carry?
About 12,000 vehicles per day (2023 count), of which roughly 45% are trucks.
How long is I 20 over Tonacana Creek?
The structure is 155 ft (47.2 m) long with a longest span of 51 ft (15.5 m) and a deck 45 ft wide.
Who owns I 20 over Tonacana Creek?
It is owned by the State Highway Agency.