Coon Creek RD over Coon Creek
FairMcHenry County, Illinois · 0.6 M S of Il 23 · Structure no. 056312900000000
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 138 ft
- 3 main spans
- Daily traffic
- 175
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Coon Creek RD over Coon Creek is a prestressed concrete box beam or girders - multiple carrying Coon Creek RD over Coon Creek in McHenry County, Illinois. It was built in 1979, so it is 46 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 5 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 175 vehicles a day, roughly 13% of them trucks, projected to reach 210 by 2046. The structure is 138 ft (42.1 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Coon Creek RD over Coon Creek built?
It was built in 1979, making it 46 years old in 2025.
What condition is Coon Creek RD over Coon 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 October 2024.
How much traffic does Coon Creek RD over Coon Creek carry?
About 175 vehicles per day (2021 count), of which roughly 13% are trucks.
How long is Coon Creek RD over Coon Creek?
The structure is 138 ft (42.1 m) long with a longest span of 46 ft (14 m) and a deck 27 ft wide.
Who owns Coon Creek RD over Coon Creek?
It is owned by the Town or Township Highway Agency.