FAS-330 CH31 over Iroquois River
PoorIroquois County, Illinois · 1MI N Watseka on 31 · Structure no. 038460300000000
- Built
- 1965
- 60 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 255 ft
- 3 main spans
- Daily traffic
- 1,200
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FAS-330 CH31 over Iroquois River is a steel continuous stringer/multi-beam or girder carrying FAS-330 CH31 over Iroquois River in Iroquois County, Illinois. It was built in 1965, so it is 60 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,200 vehicles a day, roughly 7% of them trucks, projected to reach 1,010 by 2046. The structure is 255 ft (77.7 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 FAS-330 CH31 over Iroquois River built?
It was built in 1965, making it 60 years old in 2025.
What condition is FAS-330 CH31 over Iroquois River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does FAS-330 CH31 over Iroquois River carry?
About 1,200 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is FAS-330 CH31 over Iroquois River?
The structure is 255 ft (77.7 m) long with a longest span of 97 ft (29.6 m) and a deck 34 ft wide.
Who owns FAS-330 CH31 over Iroquois River?
It is owned by the County Highway Agency.