TR 366A over I-74
FairMcLean County, Illinois · 8.87 MI E of US 51 · Structure no. 057013000000000
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 269 ft
- 4 main spans
- Daily traffic
- 75
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
TR 366A over I-74 is a steel continuous stringer/multi-beam or girder carrying TR 366A over I-74 in McLean County, Illinois. It was built in 1968, so it is 57 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 75 vehicles a day, roughly 3% of them trucks, projected to reach 76 by 2046. The structure is 269 ft (82 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
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 TR 366A over I-74 built?
It was built in 1968, making it 57 years old in 2025.
What condition is TR 366A over I-74 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 April 2024.
How much traffic does TR 366A over I-74 carry?
About 75 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is TR 366A over I-74?
The structure is 269 ft (82 m) long with a longest span of 83 ft (25.3 m) and a deck 30 ft wide.
Who owns TR 366A over I-74?
It is owned by the State Highway Agency.