US 20 over ST Charles ST
PoorKane County, Illinois · 1 Block W of Il 25 · Structure no. 045000600000000
- Built
- 1960
- 65 years old, rebuilt 2025
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 160 ft
- 3 main spans
- Daily traffic
- 47,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 over ST Charles ST is a steel continuous stringer/multi-beam or girder carrying US 20 over ST Charles ST in Kane County, Illinois. It was built in 1960 and reconstructed in 2025, 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 47,200 vehicles a day, roughly 10% of them trucks, projected to reach 46,482 by 2046. The structure is 160 ft (48.8 m) long and 52 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 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 over ST Charles ST built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2025.
What condition is US 20 over ST Charles ST 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 November 2024.
How much traffic does US 20 over ST Charles ST carry?
About 47,200 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 20 over ST Charles ST?
The structure is 160 ft (48.8 m) long with a longest span of 80 ft (24.4 m) and a deck 52 ft wide.
Who owns US 20 over ST Charles ST?
It is owned by the State Highway Agency.