I- 55 EB to I-94 N over Throop ST
FairCook County, Illinois · 0.7 Mi. SW I-90 94 · Structure no. 016269500000000
- Built
- 1999
- 26 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 180 ft
- 3 main spans
- Daily traffic
- 32,300
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I- 55 EB to I-94 N over Throop ST is a prestressed concrete continuous stringer/multi-beam or girder carrying I- 55 EB to I-94 N over Throop ST in Cook County, Illinois. It was built in 1999, so it is 26 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 32,300 vehicles a day, roughly 8% of them trucks, projected to reach 18,786 by 2046. The structure is 180 ft (55 m) long and 29 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I- 55 EB to I-94 N over Throop ST built?
It was built in 1999, making it 26 years old in 2025.
What condition is I- 55 EB to I-94 N over Throop ST 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 September 2024.
How much traffic does I- 55 EB to I-94 N over Throop ST carry?
About 32,300 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is I- 55 EB to I-94 N over Throop ST?
The structure is 180 ft (55 m) long with a longest span of 69 ft (21.1 m) and a deck 29 ft wide.
Who owns I- 55 EB to I-94 N over Throop ST?
It is owned by the State Highway Agency.