US 6 over Aux Sable CR
PoorGrundy County, Illinois · 4.9 M E of Ill 47 · Structure no. 032002500000000
- Built
- 1969
- 56 years old
- Condition
- Poor
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 164 ft
- 3 main spans
- Daily traffic
- 7,050
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 6 over Aux Sable CR is a prestressed concrete stringer/multi-beam or girder carrying US 6 over Aux Sable CR in Grundy County, Illinois. It was built in 1969, so it is 56 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 7,050 vehicles a day, roughly 14% of them trucks, projected to reach 7,140 by 2046. The structure is 164 ft (50 m) long and 46 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 6 over Aux Sable CR built?
It was built in 1969, making it 56 years old in 2025.
What condition is US 6 over Aux Sable CR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.
How much traffic does US 6 over Aux Sable CR carry?
About 7,050 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is US 6 over Aux Sable CR?
The structure is 164 ft (50 m) long with a longest span of 54 ft (16.4 m) and a deck 46 ft wide.
Who owns US 6 over Aux Sable CR?
It is owned by the State Highway Agency.