Rock City RD over Brown Creek
FairStephenson County, Illinois · 4 MI SW Davis · Structure no. 089300400000000
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected November 2024
- Type
- Frame
- Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 850
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Rock City RD over Brown Creek is a concrete frame carrying Rock City RD over Brown Creek in Stephenson County, Illinois. It was built in 1962, so it is 63 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 850 vehicles a day, roughly 8% of them trucks, projected to reach 909 by 2046. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 18 mi (29 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Rock City RD over Brown Creek built?
It was built in 1962, making it 63 years old in 2025.
What condition is Rock City RD over Brown 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 November 2024.
How much traffic does Rock City RD over Brown Creek carry?
About 850 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is Rock City RD over Brown Creek?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.
Who owns Rock City RD over Brown Creek?
It is owned by the County Highway Agency.