TR 89 over I-74
FairKnox County, Illinois · 2.5 MI S Henderson C · Structure no. 048006200000000
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 223 ft
- 4 main spans
- Daily traffic
- 75
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
TR 89 over I-74 is a steel continuous stringer/multi-beam or girder carrying TR 89 over I-74 in Knox County, Illinois. It was built in 1965, so it is 60 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 75 vehicles a day, roughly 13% of them trucks, projected to reach 76 by 2046. The structure is 223 ft (68 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 89 over I-74 built?
It was built in 1965, making it 60 years old in 2025.
What condition is TR 89 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 February 2024.
How much traffic does TR 89 over I-74 carry?
About 75 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is TR 89 over I-74?
The structure is 223 ft (68 m) long with a longest span of 67 ft (20.4 m) and a deck 30 ft wide.
Who owns TR 89 over I-74?
It is owned by the State Highway Agency.