Ill 180 over Walnut Creek
FairKnox County, Illinois · 2.5M S of Ill 17 · Structure no. 048008200000000
- Built
- 1993
- 32 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 194 ft
- 3 main spans
- Daily traffic
- 625
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 180 over Walnut Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Ill 180 over Walnut Creek in Knox County, Illinois. It was built in 1993, so it is 32 years old, younger 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 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 625 vehicles a day, roughly 8% of them trucks, projected to reach 732 by 2046. The structure is 194 ft (59.1 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 180 over Walnut Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is Ill 180 over Walnut 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 March 2024.
How much traffic does Ill 180 over Walnut Creek carry?
About 625 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Ill 180 over Walnut Creek?
The structure is 194 ft (59.1 m) long with a longest span of 71 ft (21.5 m) and a deck 35 ft wide.
Who owns Ill 180 over Walnut Creek?
It is owned by the State Highway Agency.