US 12 20 45 Lagran over I- 55 Stevenson
GoodCook County, Illinois · 5 M SW Il 43 · Structure no. 016266500000000
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 278 ft
- 2 main spans
- Daily traffic
- 64,200
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 20 45 Lagran over I- 55 Stevenson is a steel continuous stringer/multi-beam or girder carrying US 12 20 45 Lagran over I- 55 Stevenson in Cook County, Illinois. It was built in 1995, so it is 30 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 64,200 vehicles a day, roughly 13% of them trucks, projected to reach 64,842 by 2046. The structure is 278 ft (84.7 m) long and 102 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 12 20 45 Lagran over I- 55 Stevenson built?
It was built in 1995, making it 30 years old in 2025.
What condition is US 12 20 45 Lagran over I- 55 Stevenson 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 2024.
How much traffic does US 12 20 45 Lagran over I- 55 Stevenson carry?
About 64,200 vehicles per day (2021 count), of which roughly 13% are trucks.
How long is US 12 20 45 Lagran over I- 55 Stevenson?
The structure is 278 ft (84.7 m) long with a longest span of 138 ft (42 m) and a deck 102 ft wide.
Who owns US 12 20 45 Lagran over I- 55 Stevenson?
It is owned by the State Highway Agency.