Isabella ST over N Shore Channel
FairCook County, Illinois · 1 M E Green Bay P6 · Structure no. 016695000000000
- Built
- 1908
- 117 years old, rebuilt 1977
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 176 ft
- 3 main spans
- Daily traffic
- 1,300
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Isabella ST over N Shore Channel is a prestressed concrete continuous stringer/multi-beam or girder carrying Isabella ST over N Shore Channel in Cook County, Illinois. It was built in 1908 and reconstructed in 1977, so it is 117 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 1,300 vehicles a day, roughly 6% of them trucks, projected to reach 1,768 by 2046. The structure is 176 ft (53.6 m) long and 40 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 | 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 Isabella ST over N Shore Channel built?
It was built in 1908, making it 117 years old in 2025. It was reconstructed in 1977.
What condition is Isabella ST over N Shore 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 November 2024.
How much traffic does Isabella ST over N Shore Channel carry?
About 1,300 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is Isabella ST over N Shore Channel?
The structure is 176 ft (53.6 m) long with a longest span of 71 ft (21.6 m) and a deck 40 ft wide.
Who owns Isabella ST over N Shore Channel?
It is owned by the City or Municipal Highway Agency.