Il 78 over Snake Creek
FairMorgan County, Illinois · 3.6M N Walnut-J"vill · Structure no. 069000400000000
- Built
- 1929
- 96 years old, rebuilt 1965
- Condition
- Fair
- inspected April 2024
- Type
- Tee Beam
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 2,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 78 over Snake Creek is a concrete tee beam carrying Il 78 over Snake Creek in Morgan County, Illinois. It was built in 1929 and reconstructed in 1965, so it is 96 years old, older than the Illinois average of 45.3 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 2,500 vehicles a day, roughly 10% of them trucks, projected to reach 2,576 by 2046. The structure is 43 ft (13.2 m) long and 46 ft wide. If it were closed, the detour would be 21.7 mi (35 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 | 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 Il 78 over Snake Creek built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1965.
What condition is Il 78 over Snake 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 April 2024.
How much traffic does Il 78 over Snake Creek carry?
About 2,500 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Il 78 over Snake Creek?
The structure is 43 ft (13.2 m) long with a longest span of 41 ft (12.6 m) and a deck 46 ft wide.
Who owns Il 78 over Snake Creek?
It is owned by the State Highway Agency.