Il 23 over I- 90 Jane Adams
GoodMcHenry County, Illinois · I-90 @ IL23 · Structure no. 056033100000000
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 281 ft
- 2 main spans
- Daily traffic
- 3,250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 23 over I- 90 Jane Adams is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 23 over I- 90 Jane Adams in McHenry County, Illinois. It was built in 2017, so it is 8 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 3,250 vehicles a day, roughly 11% of them trucks, projected to reach 3,480 by 2046. The structure is 281 ft (85.6 m) long and 69 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 23 over I- 90 Jane Adams built?
It was built in 2017, making it 8 years old in 2025.
What condition is Il 23 over I- 90 Jane Adams 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 August 2024.
How much traffic does Il 23 over I- 90 Jane Adams carry?
About 3,250 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is Il 23 over I- 90 Jane Adams?
The structure is 281 ft (85.6 m) long with a longest span of 138 ft (42.2 m) and a deck 69 ft wide.
Who owns Il 23 over I- 90 Jane Adams?
It is owned by the State Highway Agency.