Ill 47 over I-80
FairGrundy County, Illinois · Il 47 & I-80 Intrchg · Structure no. 032009500000000
- Built
- 1997
- 28 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 254 ft
- 2 main spans
- Daily traffic
- 16,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 47 over I-80 is a steel continuous stringer/multi-beam or girder carrying Ill 47 over I-80 in Grundy County, Illinois. It was built in 1997, so it is 28 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 16,800 vehicles a day, roughly 29% of them trucks, projected to reach 17,400 by 2046. The structure is 254 ft (77.4 m) long and 93 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 47 over I-80 built?
It was built in 1997, making it 28 years old in 2025.
What condition is Ill 47 over I-80 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 February 2024.
How much traffic does Ill 47 over I-80 carry?
About 16,800 vehicles per day (2023 count), of which roughly 29% are trucks.
How long is Ill 47 over I-80?
The structure is 254 ft (77.4 m) long with a longest span of 93 ft (28.2 m) and a deck 93 ft wide.
Who owns Ill 47 over I-80?
It is owned by the State Highway Agency.