Il 7 Southwest H over Cal Sag Channel
PoorCook County, Illinois · 0.5 M NE Il 83 · Structure no. 016046400000000
- Built
- 1931
- 94 years old, rebuilt 2003
- Condition
- Poor
- inspected July 2024
- Type
- Truss - Thru
- Steel
- Length
- 346 ft
- 1 main span
- Daily traffic
- 25,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 7 Southwest H over Cal Sag Channel is a steel truss - thru carrying Il 7 Southwest H over Cal Sag Channel in Cook County, Illinois. It was built in 1931 and reconstructed in 2003, so it is 94 years old, older 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 4 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 25,400 vehicles a day, roughly 3% of them trucks, projected to reach 24,745 by 2046. The structure is 346 ft (105.6 m) long and 60 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 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 7 Southwest H over Cal Sag Channel built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2003.
What condition is Il 7 Southwest H over Cal Sag Channel 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 July 2024.
How much traffic does Il 7 Southwest H over Cal Sag Channel carry?
About 25,400 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Il 7 Southwest H over Cal Sag Channel?
The structure is 346 ft (105.6 m) long with a longest span of 216 ft (65.8 m) and a deck 60 ft wide.
Who owns Il 7 Southwest H over Cal Sag Channel?
It is owned by the State Highway Agency.