Illinois 146 over Little Cache Creek
GoodJohnson County, Illinois · 0.2 MI West Vienna · Structure no. 044200400000000
- Built
- 1973
- 52 years old
- Condition
- Good
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 5,050
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Illinois 146 over Little Cache Creek is a concrete continuous culvert carrying Illinois 146 over Little Cache Creek in Johnson County, Illinois. It was built in 1973, so it is 52 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 5,050 vehicles a day, roughly 17% of them trucks, projected to reach 4,883 by 2046. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 9.9 mi (16 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Illinois 146 over Little Cache Creek built?
It was built in 1973, making it 52 years old in 2025.
What condition is Illinois 146 over Little Cache Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.
How much traffic does Illinois 146 over Little Cache Creek carry?
About 5,050 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is Illinois 146 over Little Cache Creek?
The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m).
Who owns Illinois 146 over Little Cache Creek?
It is owned by the State Highway Agency.