171st ST over I-80/294
FairCook County, Illinois · 2.0 M W of IL-1 · Structure no. 016999900000000
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 285 ft
- 4 main spans
- Daily traffic
- 1,350
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
171st ST over I-80/294 is a steel stringer/multi-beam or girder carrying 171st ST over I-80/294 in Cook County, Illinois. It was built in 1962, so it is 63 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 1,350 vehicles a day, roughly 11% of them trucks, projected to reach 1,667 by 2046. The structure is 285 ft (86.9 m) long and 42 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 171st ST over I-80/294 built?
It was built in 1962, making it 63 years old in 2025.
What condition is 171st ST over I-80/294 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 April 2024.
How much traffic does 171st ST over I-80/294 carry?
About 1,350 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is 171st ST over I-80/294?
The structure is 285 ft (86.9 m) long with a longest span of 88 ft (26.8 m) and a deck 42 ft wide.
Who owns 171st ST over I-80/294?
It is owned by the City or Municipal Highway Agency.