US 20 WB over Prairie RD
FairWinnebago County, Illinois · 1 MI W of Ill 2 · Structure no. 101005100000000
- Built
- 1964
- 61 years old, rebuilt 2008
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 20,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 WB over Prairie RD is a steel continuous stringer/multi-beam or girder carrying US 20 WB over Prairie RD in Winnebago County, Illinois. It was built in 1964 and reconstructed in 2008, so it is 61 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 6 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 20,400 vehicles a day, roughly 13% of them trucks, projected to reach 10,555 by 2046. The structure is 154 ft (46.9 m) long and 42 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 WB over Prairie RD built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2008.
What condition is US 20 WB over Prairie RD 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 September 2024.
How much traffic does US 20 WB over Prairie RD carry?
About 20,400 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is US 20 WB over Prairie RD?
The structure is 154 ft (46.9 m) long with a longest span of 56 ft (17.1 m) and a deck 42 ft wide.
Who owns US 20 WB over Prairie RD?
It is owned by the State Highway Agency.