Frohling RD over S Br Kishwaukee
PoorMcHenry County, Illinois · 1.1 MI SE of Seemann · Structure no. 056312500000000
- Built
- 1978
- 47 years old
- Condition
- Poor
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 325
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Frohling RD over S Br Kishwaukee is a prestressed concrete box beam or girders - multiple carrying Frohling RD over S Br Kishwaukee in McHenry County, Illinois. It was built in 1978, so it is 47 years old, older 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 325 vehicles a day, roughly 4% of them trucks, projected to reach 390 by 2046. The structure is 52 ft (15.8 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
| 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 Frohling RD over S Br Kishwaukee built?
It was built in 1978, making it 47 years old in 2025.
What condition is Frohling RD over S Br Kishwaukee 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 October 2024.
How much traffic does Frohling RD over S Br Kishwaukee carry?
About 325 vehicles per day (2021 count), of which roughly 4% are trucks.
How long is Frohling RD over S Br Kishwaukee?
The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.
Who owns Frohling RD over S Br Kishwaukee?
It is owned by the Town or Township Highway Agency.