Il 21 over I- 94 Tri State Toll
FairLake County, Illinois · 1.2 M S of Il 132 · Structure no. 049990100000000
- Built
- 1958
- 67 years old, rebuilt 2003
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 255 ft
- 4 main spans
- Daily traffic
- 13,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 21 over I- 94 Tri State Toll is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 21 over I- 94 Tri State Toll in Lake County, Illinois. It was built in 1958 and reconstructed in 2003, so it is 67 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 5 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 13,300 vehicles a day, roughly 3% of them trucks, projected to reach 12,827 by 2046. The structure is 255 ft (77.6 m) long and 81 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 21 over I- 94 Tri State Toll built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2003.
What condition is Il 21 over I- 94 Tri State Toll 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 May 2024.
How much traffic does Il 21 over I- 94 Tri State Toll carry?
About 13,300 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Il 21 over I- 94 Tri State Toll?
The structure is 255 ft (77.6 m) long with a longest span of 74 ft (22.5 m) and a deck 81 ft wide.
Who owns Il 21 over I- 94 Tri State Toll?
It is owned by the State Highway Agency.