Ill 78 over White Oak Creek
FairMason County, Illinois · 2.8MI S JCT 78/136 · Structure no. 063200600000000
- Built
- 1931
- 94 years old
- Condition
- Fair
- inspected June 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 1,750
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 78 over White Oak Creek is a concrete continuous culvert carrying Ill 78 over White Oak Creek in Mason County, Illinois. It was built in 1931, so it is 94 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 1,750 vehicles a day, roughly 14% of them trucks, projected to reach 1,818 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 29.2 mi (47 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 78 over White Oak Creek built?
It was built in 1931, making it 94 years old in 2025.
What condition is Ill 78 over White Oak 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 June 2023.
How much traffic does Ill 78 over White Oak Creek carry?
About 1,750 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is Ill 78 over White Oak Creek?
The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).
Who owns Ill 78 over White Oak Creek?
It is owned by the State Highway Agency.