I- 57 NB over Cal Sag Channel
FairCook County, Illinois · 0.5 M S 127th · Structure no. 016006500000000
- Built
- 1966
- 59 years old, rebuilt 1989
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 492 ft
- 3 main spans
- Daily traffic
- 54,850
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I- 57 NB over Cal Sag Channel is a steel continuous stringer/multi-beam or girder carrying I- 57 NB over Cal Sag Channel in Cook County, Illinois. It was built in 1966 and reconstructed in 1989, so it is 59 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 54,850 vehicles a day, roughly 6% of them trucks, projected to reach 53,934 by 2046. The structure is 492 ft (149.9 m) long and 58 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 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I- 57 NB over Cal Sag Channel built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1989.
What condition is I- 57 NB over Cal Sag Channel 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 April 2023.
How much traffic does I- 57 NB over Cal Sag Channel carry?
About 54,850 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is I- 57 NB over Cal Sag Channel?
The structure is 492 ft (149.9 m) long with a longest span of 268 ft (81.6 m) and a deck 58 ft wide.
Who owns I- 57 NB over Cal Sag Channel?
It is owned by the State Highway Agency.