US 20 by Pass over Fox River
PoorKane County, Illinois · 0.3 M W Il 25 · Structure no. 045000400000000
- Built
- 1960
- 65 years old
- Condition
- Poor
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 660 ft
- 5 main spans
- Daily traffic
- 47,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 by Pass over Fox River is a steel continuous stringer/multi-beam or girder carrying US 20 by Pass over Fox River in Kane County, Illinois. It was built in 1960, so it is 65 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 47,200 vehicles a day, roughly 10% of them trucks, projected to reach 46,482 by 2046. The structure is 660 ft (201.2 m) long and 64 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 4 Poor | Advanced section loss, deterioration, 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 by Pass over Fox River built?
It was built in 1960, making it 65 years old in 2025.
What condition is US 20 by Pass over Fox 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 June 2023.
How much traffic does US 20 by Pass over Fox River carry?
About 47,200 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 20 by Pass over Fox River?
The structure is 660 ft (201.2 m) long with a longest span of 145 ft (44.2 m) and a deck 64 ft wide.
Who owns US 20 by Pass over Fox River?
It is owned by the State Highway Agency.