TR 21 over Oak Creek
FairAdams County, Illinois · 1.0 Mi. E. of Lima · Structure no. 001329100000000
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected December 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 62 ft
- 1 main span
- Daily traffic
- 50
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 21 over Oak Creek is a prestressed concrete box beam or girders - multiple carrying TR 21 over Oak Creek in Adams County, Illinois. It was built in 1983, so it is 42 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 50 vehicles a day, roughly 26% of them trucks, projected to reach 51 by 2046. The structure is 62 ft (18.9 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 TR 21 over Oak Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is TR 21 over Oak 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 December 2023.
How much traffic does TR 21 over Oak Creek carry?
About 50 vehicles per day (2024 count), of which roughly 26% are trucks.
How long is TR 21 over Oak Creek?
The structure is 62 ft (18.9 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.
Who owns TR 21 over Oak Creek?
It is owned by the Town or Township Highway Agency.