Il 47 & US-30 over Rob Roy Creek
FairKane County, Illinois · 2.9 M S of Il 56 · Structure no. 045201100000000
- Built
- 1989
- 36 years old
- Condition
- Fair
- inspected December 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 57 ft
- 2 main spans
- Daily traffic
- 20,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 47 & US-30 over Rob Roy Creek is a concrete continuous culvert carrying Il 47 & US-30 over Rob Roy Creek in Kane County, Illinois. It was built in 1989, so it is 36 years old, younger 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 20,200 vehicles a day, roughly 14% of them trucks, projected to reach 23,302 by 2046. The structure is 57 ft (17.5 m) long. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 47 & US-30 over Rob Roy Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is Il 47 & US-30 over Rob Roy Creek 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 December 2023.
How much traffic does Il 47 & US-30 over Rob Roy Creek carry?
About 20,200 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is Il 47 & US-30 over Rob Roy Creek?
The structure is 57 ft (17.5 m) long with a longest span of 28 ft (8.4 m).
Who owns Il 47 & US-30 over Rob Roy Creek?
It is owned by the State Highway Agency.