Harmony Road over Coon Creek
PoorMcHenry County, Illinois · 0.3 MI E of Payne RD · Structure no. 056313800000000
- Built
- 1980
- 45 years old
- Condition
- Poor
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 126 ft
- 3 main spans
- Daily traffic
- 725
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Harmony Road over Coon Creek is a prestressed concrete box beam or girders - multiple carrying Harmony Road over Coon Creek in McHenry County, Illinois. It was built in 1980, so it is 45 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 725 vehicles a day, roughly 15% of them trucks, projected to reach 870 by 2046. The structure is 126 ft (38.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Harmony Road over Coon Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is Harmony Road over Coon Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.
How much traffic does Harmony Road over Coon Creek carry?
About 725 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is Harmony Road over Coon Creek?
The structure is 126 ft (38.4 m) long with a longest span of 42 ft (12.8 m) and a deck 27 ft wide.
Who owns Harmony Road over Coon Creek?
It is owned by the County Highway Agency.