Ill 18 WB over Vermilion River
FairLaSalle County, Illinois · 0.10 MI W of Ill 23 · Structure no. 050020200000000
- Built
- 1988
- 37 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 400 ft
- 4 main spans
- Daily traffic
- 4,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 18 WB over Vermilion River is a prestressed concrete stringer/multi-beam or girder carrying Ill 18 WB over Vermilion River in LaSalle County, Illinois. It was built in 1988, so it is 37 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 5 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 4,200 vehicles a day, roughly 10% of them trucks, projected to reach 4,040 by 2046. The structure is 400 ft (121.9 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| 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 Ill 18 WB over Vermilion River built?
It was built in 1988, making it 37 years old in 2025.
What condition is Ill 18 WB over Vermilion 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 March 2024.
How much traffic does Ill 18 WB over Vermilion River carry?
About 4,200 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Ill 18 WB over Vermilion River?
The structure is 400 ft (121.9 m) long with a longest span of 99 ft (30.2 m) and a deck 45 ft wide.
Who owns Ill 18 WB over Vermilion River?
It is owned by the State Highway Agency.