Sauk Trail over Thorn Creek
FairCook County, Illinois · 0.6 M W Ashland P2 · Structure no. 016300500000000
- Built
- 1932
- 93 years old, rebuilt 1986
- Condition
- Fair
- inspected November 2024
- Type
- Tee Beam
- Concrete
- Length
- 35 ft
- 1 main span
- Daily traffic
- 15,300
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Sauk Trail over Thorn Creek is a concrete tee beam carrying Sauk Trail over Thorn Creek in Cook County, Illinois. It was built in 1932 and reconstructed in 1986, so it is 93 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 5 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 15,300 vehicles a day, roughly 6% of them trucks, projected to reach 15,300 by 2046. The structure is 35 ft (10.8 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sauk Trail over Thorn Creek built?
It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1986.
What condition is Sauk Trail over Thorn 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 November 2024.
How much traffic does Sauk Trail over Thorn Creek carry?
About 15,300 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is Sauk Trail over Thorn Creek?
The structure is 35 ft (10.8 m) long with a longest span of 35 ft (10.8 m) and a deck 64 ft wide.
Who owns Sauk Trail over Thorn Creek?
It is owned by the County Highway Agency.