Ill 180 over Spoon River
FairKnox County, Illinois · 1 MI N Williamsfield · Structure no. 048008000000000
- Built
- 1990
- 35 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 433 ft
- 3 main spans
- Daily traffic
- 625
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 180 over Spoon River is a steel continuous stringer/multi-beam or girder carrying Ill 180 over Spoon River in Knox County, Illinois. It was built in 1990, so it is 35 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 625 vehicles a day, roughly 11% of them trucks, projected to reach 1,162 by 2046. The structure is 433 ft (132 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Ill 180 over Spoon River built?
It was built in 1990, making it 35 years old in 2025.
What condition is Ill 180 over Spoon 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 February 2024.
How much traffic does Ill 180 over Spoon River carry?
About 625 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is Ill 180 over Spoon River?
The structure is 433 ft (132 m) long with a longest span of 171 ft (52.1 m) and a deck 33 ft wide.
Who owns Ill 180 over Spoon River?
It is owned by the State Highway Agency.