I- 55 Stevenson over Wolf RD & Flag CR
FairCook County, Illinois · 1.5 M W US 45 · Structure no. 016000300000000
- Built
- 1963
- 62 years old, rebuilt 1996
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 282 ft
- 5 main spans
- Daily traffic
- 144,200
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I- 55 Stevenson over Wolf RD & Flag CR is a steel continuous stringer/multi-beam or girder carrying I- 55 Stevenson over Wolf RD & Flag CR in Cook County, Illinois. It was built in 1963 and reconstructed in 1996, so it is 62 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 5 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 144,200 vehicles a day, roughly 10% of them trucks, projected to reach 146,450 by 2046. The structure is 282 ft (86.1 m) long and 142 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I- 55 Stevenson over Wolf RD & Flag CR built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1996.
What condition is I- 55 Stevenson over Wolf RD & Flag CR 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 I- 55 Stevenson over Wolf RD & Flag CR carry?
About 144,200 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is I- 55 Stevenson over Wolf RD & Flag CR?
The structure is 282 ft (86.1 m) long with a longest span of 68 ft (20.6 m) and a deck 142 ft wide.
Who owns I- 55 Stevenson over Wolf RD & Flag CR?
It is owned by the State Highway Agency.