TR 171 over Caldwell Creek
FairKnox County, Illinois · W1/2-11-T11NR4E · Structure no. 048311600000000
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected February 2025
- Type
- Channel Beam
- Concrete
- Length
- 72 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 171 over Caldwell Creek is a concrete channel beam carrying TR 171 over Caldwell Creek in Knox County, Illinois. It was built in 1969, so it is 56 years old, older 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 100 vehicles a day, roughly 20% of them trucks, projected to reach 76 by 2046. The structure is 72 ft (21.9 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 171 over Caldwell Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is TR 171 over Caldwell 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 February 2025.
How much traffic does TR 171 over Caldwell Creek carry?
About 100 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is TR 171 over Caldwell Creek?
The structure is 72 ft (21.9 m) long with a longest span of 24 ft (7.3 m) and a deck 23 ft wide.
Who owns TR 171 over Caldwell Creek?
It is owned by the Town or Township Highway Agency.