Il 23 over Kishwaukee River
GoodMcHenry County, Illinois · 0.7 M N of Il 176 · Structure no. 056000100000000
- Built
- 2009
- 16 years old
- Condition
- Good
- inspected September 2022
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 260 ft
- 3 main spans
- Daily traffic
- 6,450
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 23 over Kishwaukee River is a steel continuous stringer/multi-beam or girder carrying Il 23 over Kishwaukee River in McHenry County, Illinois. It was built in 2009, so it is 16 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 6,450 vehicles a day, roughly 10% of them trucks, projected to reach 8,040 by 2046. The structure is 260 ft (79.2 m) long and 47 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 Il 23 over Kishwaukee River built?
It was built in 2009, making it 16 years old in 2025.
What condition is Il 23 over Kishwaukee River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2022.
How much traffic does Il 23 over Kishwaukee River carry?
About 6,450 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Il 23 over Kishwaukee River?
The structure is 260 ft (79.2 m) long with a longest span of 88 ft (26.7 m) and a deck 47 ft wide.
Who owns Il 23 over Kishwaukee River?
It is owned by the State Highway Agency.