Carbon Hill RD CH3 over East Fk Mazon River
GoodPosted for loadGrundy County, Illinois · 0.91 MI S of FAS 289 · Structure no. 032512100000000
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 159 ft
- 2 main spans
- Daily traffic
- 1,400
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Carbon Hill RD CH3 over East Fk Mazon River is a prestressed concrete box beam or girders - multiple carrying Carbon Hill RD CH3 over East Fk Mazon River in Grundy County, Illinois. It was built in 1977, so it is 48 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.
It carries about 1,400 vehicles a day, roughly 4% of them trucks, projected to reach 1,860 by 2046. The structure is 159 ft (48.5 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 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 | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Carbon Hill RD CH3 over East Fk Mazon River built?
It was built in 1977, making it 48 years old in 2025.
What condition is Carbon Hill RD CH3 over East Fk Mazon River 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 October 2024.
How much traffic does Carbon Hill RD CH3 over East Fk Mazon River carry?
About 1,400 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Carbon Hill RD CH3 over East Fk Mazon River?
The structure is 159 ft (48.5 m) long with a longest span of 77 ft (23.5 m) and a deck 31 ft wide.
Who owns Carbon Hill RD CH3 over East Fk Mazon River?
It is owned by the County Highway Agency.