TR 20 over Rock Creek
GoodMcDonough County, Illinois · CTR-19-T6NR4W · Structure no. 055451300000000
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected December 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 61 ft
- 1 main span
- Daily traffic
- 50
- 2016 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 20 over Rock Creek is a prestressed concrete box beam or girders - multiple carrying TR 20 over Rock Creek in McDonough County, Illinois. It was built in 1997, so it is 28 years old, younger 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 50 vehicles a day, projected to reach 51 by 2046. The structure is 61 ft (18.7 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 20 over Rock Creek built?
It was built in 1997, making it 28 years old in 2025.
What condition is TR 20 over Rock 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 December 2024.
How much traffic does TR 20 over Rock Creek carry?
About 50 vehicles per day (2016 count).
How long is TR 20 over Rock Creek?
The structure is 61 ft (18.7 m) long with a longest span of 60 ft (18.3 m) and a deck 24 ft wide.
Who owns TR 20 over Rock Creek?
It is owned by the Town or Township Highway Agency.