Phillips Road over Big Rock Creek
GoodDeKalb County, Illinois · 1070N 1615E · Structure no. 019542500000000
- Built
- 1981
- 44 years old
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 66 ft
- 1 main span
- Daily traffic
- 400
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Phillips Road over Big Rock Creek is a prestressed concrete box beam or girders - multiple carrying Phillips Road over Big Rock Creek in DeKalb County, Illinois. It was built in 1981, so it is 44 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 400 vehicles a day, roughly 12% of them trucks, projected to reach 448 by 2046. The structure is 66 ft (20.1 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Phillips Road over Big Rock Creek built?
It was built in 1981, making it 44 years old in 2025.
What condition is Phillips Road over Big Rock Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.
How much traffic does Phillips Road over Big Rock Creek carry?
About 400 vehicles per day (2021 count), of which roughly 12% are trucks.
How long is Phillips Road over Big Rock Creek?
The structure is 66 ft (20.1 m) long with a longest span of 62 ft (18.9 m) and a deck 29 ft wide.
Who owns Phillips Road over Big Rock Creek?
It is owned by the Town or Township Highway Agency.