Il 173 over I- 94 Tri-State
FairLake County, Illinois · 0.75 M W US 41 · Structure no. 049053500000000
- Built
- 2015
- 10 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 253 ft
- 4 main spans
- Daily traffic
- 17,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 173 over I- 94 Tri-State is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 173 over I- 94 Tri-State in Lake County, Illinois. It was built in 2015, so it is 10 years old, younger 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 17,500 vehicles a day, roughly 7% of them trucks, projected to reach 17,372 by 2046. The structure is 253 ft (77.1 m) long and 127 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Il 173 over I- 94 Tri-State built?
It was built in 2015, making it 10 years old in 2025.
What condition is Il 173 over I- 94 Tri-State 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 2023.
How much traffic does Il 173 over I- 94 Tri-State carry?
About 17,500 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is Il 173 over I- 94 Tri-State?
The structure is 253 ft (77.1 m) long with a longest span of 125 ft (38.1 m) and a deck 127 ft wide.
Who owns Il 173 over I- 94 Tri-State?
It is owned by the State Highway Agency.