Il 120 over US 41
FairLake County, Illinois · Gurnee · Structure no. 049005000000000
- Built
- 1959
- 66 years old, rebuilt 2018
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 236 ft
- 4 main spans
- Daily traffic
- 19,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 120 over US 41 is a steel continuous stringer/multi-beam or girder carrying Il 120 over US 41 in Lake County, Illinois. It was built in 1959 and reconstructed in 2018, so it is 66 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 19,300 vehicles a day, roughly 5% of them trucks, projected to reach 18,382 by 2046. The structure is 236 ft (71.9 m) long and 91 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 120 over US 41 built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2018.
What condition is Il 120 over US 41 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.
How much traffic does Il 120 over US 41 carry?
About 19,300 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Il 120 over US 41?
The structure is 236 ft (71.9 m) long with a longest span of 65 ft (19.9 m) and a deck 91 ft wide.
Who owns Il 120 over US 41?
It is owned by the State Highway Agency.