CH43 (millstream R over Kishwaukee River
PoorClosed to trafficMcHenry County, Illinois · 0.5 Mi. N. Ill. 176 · Structure no. 056302200000000
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected October 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 149 ft
- 3 main spans
- Daily traffic
- 1,700
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
CH43 (millstream R over Kishwaukee River is a prestressed concrete box beam or girders - multiple carrying CH43 (millstream R over Kishwaukee River in McHenry County, Illinois. It was built in 1964, so it is 61 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. Its operating status is: closed to all traffic.
It carries about 1,700 vehicles a day, roughly 8% of them trucks, projected to reach 2,040 by 2046. The structure is 149 ft (45.4 m) long and 31 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CH43 (millstream R over Kishwaukee River built?
It was built in 1964, making it 61 years old in 2025.
What condition is CH43 (millstream R over Kishwaukee River 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 2022.
How much traffic does CH43 (millstream R over Kishwaukee River carry?
About 1,700 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is CH43 (millstream R over Kishwaukee River?
The structure is 149 ft (45.4 m) long with a longest span of 49 ft (14.9 m) and a deck 31 ft wide.
Who owns CH43 (millstream R over Kishwaukee River?
It is owned by the County Highway Agency.