I- 55 S Rmp I-90 9 over I- 55 Stevenson
FairCook County, Illinois · 0.6 M E I94 · Structure no. 016003900000000
- Built
- 1965
- 60 years old, rebuilt 2002
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 171 ft
- 2 main spans
- Daily traffic
- 19,500
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I- 55 S Rmp I-90 9 over I- 55 Stevenson is a steel continuous stringer/multi-beam or girder carrying I- 55 S Rmp I-90 9 over I- 55 Stevenson in Cook County, Illinois. It was built in 1965 and reconstructed in 2002, so it is 60 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 19,500 vehicles a day, roughly 11% of them trucks, projected to reach 17,271 by 2046. The structure is 171 ft (52 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I- 55 S Rmp I-90 9 over I- 55 Stevenson built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2002.
What condition is I- 55 S Rmp I-90 9 over I- 55 Stevenson 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 2023.
How much traffic does I- 55 S Rmp I-90 9 over I- 55 Stevenson carry?
About 19,500 vehicles per day (2024 count), of which roughly 11% are trucks.
How long is I- 55 S Rmp I-90 9 over I- 55 Stevenson?
The structure is 171 ft (52 m) long with a longest span of 90 ft (27.4 m) and a deck 29 ft wide.
Who owns I- 55 S Rmp I-90 9 over I- 55 Stevenson?
It is owned by the State Highway Agency.