Ill 37 over Cache River
FairJohnson County, Illinois · .5 MI S. of W Vienna · Structure no. 044001100000000
- Built
- 1931
- 94 years old, rebuilt 1986
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 460 ft
- 9 main spans
- Daily traffic
- 1,350
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 37 over Cache River is a steel continuous stringer/multi-beam or girder carrying Ill 37 over Cache River in Johnson County, Illinois. It was built in 1931 and reconstructed in 1986, so it is 94 years old, older 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 1,350 vehicles a day, roughly 10% of them trucks, projected to reach 1,733 by 2046. The structure is 460 ft (140.2 m) long and 35 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 7 Good | Some minor problems. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 37 over Cache River built?
It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1986.
What condition is Ill 37 over Cache 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 August 2024.
How much traffic does Ill 37 over Cache River carry?
About 1,350 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Ill 37 over Cache River?
The structure is 460 ft (140.2 m) long with a longest span of 65 ft (19.8 m) and a deck 35 ft wide.
Who owns Ill 37 over Cache River?
It is owned by the State Highway Agency.