Ch 15 over Walnut Creek
FairKnox County, Illinois · NW-31-T13NR4E · Structure no. 048330500000000
- Built
- 1988
- 37 years old
- Condition
- Fair
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 141 ft
- 3 main spans
- Daily traffic
- 275
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Ch 15 over Walnut Creek is a prestressed concrete box beam or girders - multiple carrying Ch 15 over Walnut Creek in Knox County, Illinois. It was built in 1988, so it is 37 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 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 275 vehicles a day, roughly 25% of them trucks, projected to reach 253 by 2046. The structure is 141 ft (43.1 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Ch 15 over Walnut Creek built?
It was built in 1988, making it 37 years old in 2025.
What condition is Ch 15 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 Ch 15 over Walnut Creek carry?
About 275 vehicles per day (2022 count), of which roughly 25% are trucks.
How long is Ch 15 over Walnut Creek?
The structure is 141 ft (43.1 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.
Who owns Ch 15 over Walnut Creek?
It is owned by the County Highway Agency.