US 6 (159th St) over Little Cal River
FairCook County, Illinois · 0.1 M E I-94 Bf · Structure no. 016038900000000
- Built
- 1931
- 94 years old, rebuilt 1981
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 163 ft
- 3 main spans
- Daily traffic
- 21,100
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 6 (159th St) over Little Cal River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 6 (159th St) over Little Cal River in Cook County, Illinois. It was built in 1931 and reconstructed in 1981, so it is 94 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 21,100 vehicles a day, roughly 3% of them trucks, projected to reach 25,149 by 2046. The structure is 163 ft (49.6 m) long and 80 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 6 (159th St) over Little Cal River built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1981.
What condition is US 6 (159th St) over Little Cal 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 November 2023.
How much traffic does US 6 (159th St) over Little Cal River carry?
About 21,100 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is US 6 (159th St) over Little Cal River?
The structure is 163 ft (49.6 m) long with a longest span of 55 ft (16.7 m) and a deck 80 ft wide.
Who owns US 6 (159th St) over Little Cal River?
It is owned by the State Highway Agency.