Il 71 FAP 311 over Interm. Stream
GoodLaSalle County, Illinois · 2.57 MI N of I-80 · Structure no. 050204300000000
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected February 2021
- Type
- Culvert
- Concrete
- Length
- 39 ft
- 3 main spans
- Daily traffic
- 5,600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 71 FAP 311 over Interm. Stream is a concrete culvert carrying Il 71 FAP 311 over Interm. Stream in LaSalle County, Illinois. It was built in 2008, so it is 17 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 5,600 vehicles a day, roughly 18% of them trucks, projected to reach 5,757 by 2046. The structure is 39 ft (11.9 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 71 FAP 311 over Interm. Stream built?
It was built in 2008, making it 17 years old in 2025.
What condition is Il 71 FAP 311 over Interm. Stream in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2021.
How much traffic does Il 71 FAP 311 over Interm. Stream carry?
About 5,600 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is Il 71 FAP 311 over Interm. Stream?
The structure is 39 ft (11.9 m) long with a longest span of 11 ft (3.4 m) and a deck 100 ft wide.
Who owns Il 71 FAP 311 over Interm. Stream?
It is owned by the State Highway Agency.