CH-20 over Trib Big Creek
GoodHamilton County, Illinois · 2 MI W Piopolis · Structure no. 033318600000000
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected March 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 44 ft
- 1 main span
- Daily traffic
- 250
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
CH-20 over Trib Big Creek is a prestressed concrete box beam or girders - multiple carrying CH-20 over Trib Big Creek in Hamilton County, Illinois. It was built in 1978, so it is 47 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 250 vehicles a day, roughly 16% of them trucks, projected to reach 101 by 2046. The structure is 44 ft (13.4 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| 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 CH-20 over Trib Big Creek built?
It was built in 1978, making it 47 years old in 2025.
What condition is CH-20 over Trib Big 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 March 2022.
How much traffic does CH-20 over Trib Big Creek carry?
About 250 vehicles per day (2022 count), of which roughly 16% are trucks.
How long is CH-20 over Trib Big Creek?
The structure is 44 ft (13.4 m) long with a longest span of 41 ft (12.5 m) and a deck 24 ft wide.
Who owns CH-20 over Trib Big Creek?
It is owned by the County Highway Agency.