CH-27 (johnson Rd) over Nippersink CR
PoorPosted for loadMcHenry County, Illinois · 0.6 M NE Durkee RD · Structure no. 056312800000000
- Built
- 1978
- 47 years old
- Condition
- Poor
- inspected September 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 97 ft
- 2 main spans
- Daily traffic
- 300
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
CH-27 (johnson Rd) over Nippersink CR is a prestressed concrete box beam or girders - multiple carrying CH-27 (johnson Rd) over Nippersink CR 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 3 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. Its operating status is: posted for load restriction.
It carries about 300 vehicles a day, roughly 9% of them trucks, projected to reach 360 by 2046. The structure is 97 ft (29.7 m) long and 26 ft wide.
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 | 7 Good | Some minor problems. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CH-27 (johnson Rd) over Nippersink CR built?
It was built in 1978, making it 47 years old in 2025.
What condition is CH-27 (johnson Rd) over Nippersink CR 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 September 2024.
How much traffic does CH-27 (johnson Rd) over Nippersink CR carry?
About 300 vehicles per day (2021 count), of which roughly 9% are trucks.
How long is CH-27 (johnson Rd) over Nippersink CR?
The structure is 97 ft (29.7 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.
Who owns CH-27 (johnson Rd) over Nippersink CR?
It is owned by the County Highway Agency.