15th ST over Thorn Creek
FairCook County, Illinois · 0.5 M E Ashlnd P2 · Structure no. 016640000000000
- Built
- 1926
- 99 years old
- Condition
- Fair
- inspected May 2024
- Type
- Tee Beam
- Concrete
- Length
- 38 ft
- 1 main span
- Daily traffic
- 675
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
15th ST over Thorn Creek is a concrete tee beam carrying 15th ST over Thorn Creek in Cook County, Illinois. It was built in 1926, so it is 99 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 675 vehicles a day, roughly 12% of them trucks, projected to reach 1,061 by 2046. The structure is 38 ft (11.6 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 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 15th ST over Thorn Creek built?
It was built in 1926, making it 99 years old in 2025.
What condition is 15th ST 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 May 2024.
How much traffic does 15th ST over Thorn Creek carry?
About 675 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is 15th ST over Thorn Creek?
The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 48 ft wide.
Who owns 15th ST over Thorn Creek?
It is owned by the City or Municipal Highway Agency.