Ch 30 over Rock Creek
GoodKankakee County, Illinois · 4 MI W Manteno · Structure no. 046332000000000
- Built
- 1974
- 51 years old, rebuilt 2002
- Condition
- Good
- inspected April 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 122 ft
- 3 main spans
- Daily traffic
- 175
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Ch 30 over Rock Creek is a prestressed concrete box beam or girders - multiple carrying Ch 30 over Rock Creek in Kankakee County, Illinois. It was built in 1974 and reconstructed in 2002, so it is 51 years old, older 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 175 vehicles a day, roughly 4% of them trucks, projected to reach 179 by 2046. The structure is 122 ft (37.1 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 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 Ch 30 over Rock Creek built?
It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2002.
What condition is Ch 30 over 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 2022.
How much traffic does Ch 30 over Rock Creek carry?
About 175 vehicles per day (2021 count), of which roughly 4% are trucks.
How long is Ch 30 over Rock Creek?
The structure is 122 ft (37.1 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.
Who owns Ch 30 over Rock Creek?
It is owned by the County Highway Agency.