Il 1 over Iroquois River
GoodIroquois County, Illinois · 1.0 MI N of US 24 · Structure no. 038021900000000
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected January 2021
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 346 ft
- 4 main spans
- Daily traffic
- 2,600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 1 over Iroquois River is a prestressed concrete stringer/multi-beam or girder carrying Il 1 over Iroquois River in Iroquois County, Illinois. It was built in 2015, so it is 10 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,600 vehicles a day, roughly 10% of them trucks, projected to reach 2,525 by 2046. The structure is 346 ft (105.5 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 1 over Iroquois River built?
It was built in 2015, making it 10 years old in 2025.
What condition is Il 1 over Iroquois River 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 January 2021.
How much traffic does Il 1 over Iroquois River carry?
About 2,600 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Il 1 over Iroquois River?
The structure is 346 ft (105.5 m) long with a longest span of 88 ft (26.8 m) and a deck 43 ft wide.
Who owns Il 1 over Iroquois River?
It is owned by the State Highway Agency.