I- 55 Stevenson over Des Plaines River
FairCook County, Illinois · 0.9 M E of US 45 · Structure no. 016270400000000
- Built
- 2000
- 25 years old, rebuilt 2002
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 703 ft
- 5 main spans
- Daily traffic
- 142,000
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I- 55 Stevenson over Des Plaines River is a steel continuous stringer/multi-beam or girder carrying I- 55 Stevenson over Des Plaines River in Cook County, Illinois. It was built in 2000 and reconstructed in 2002, so it is 25 years old, younger 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 142,000 vehicles a day, roughly 10% of them trucks, projected to reach 139,986 by 2046. The structure is 703 ft (214.2 m) long and 139 ft wide.
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 | 7 Good | Some minor problems. |
| 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- 55 Stevenson over Des Plaines River built?
It was built in 2000, making it 25 years old in 2025. It was reconstructed in 2002.
What condition is I- 55 Stevenson over Des Plaines River 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 June 2023.
How much traffic does I- 55 Stevenson over Des Plaines River carry?
About 142,000 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is I- 55 Stevenson over Des Plaines River?
The structure is 703 ft (214.2 m) long with a longest span of 173 ft (52.7 m) and a deck 139 ft wide.
Who owns I- 55 Stevenson over Des Plaines River?
It is owned by the State Highway Agency.