Chicago Heights RD over Thorn Creek
PoorCook County, Illinois · 1.5 Miles NE of IL-1 · Structure no. 016241700000000
- Built
- 1982
- 43 years old, rebuilt 2020
- Condition
- Poor
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 89 ft
- 2 main spans
- Daily traffic
- 6,550
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Chicago Heights RD over Thorn Creek is a prestressed concrete box beam or girders - multiple carrying Chicago Heights RD over Thorn Creek in Cook County, Illinois. It was built in 1982 and reconstructed in 2020, so it is 43 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 6,550 vehicles a day, roughly 7% of them trucks, projected to reach 7,424 by 2046. The structure is 89 ft (27 m) long and 61 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Chicago Heights RD over Thorn Creek built?
It was built in 1982, making it 43 years old in 2025. It was reconstructed in 2020.
What condition is Chicago Heights RD over Thorn Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.
How much traffic does Chicago Heights RD over Thorn Creek carry?
About 6,550 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Chicago Heights RD over Thorn Creek?
The structure is 89 ft (27 m) long with a longest span of 44 ft (13.3 m) and a deck 61 ft wide.
Who owns Chicago Heights RD over Thorn Creek?
It is owned by the State Highway Agency.