TR 496 over Mackinaw River
FairMcLean County, Illinois · 3.5 MI W Colfax · Structure no. 057502400000000
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected March 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 175 ft
- 4 main spans
- Daily traffic
- 75
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 496 over Mackinaw River is a concrete continuous tee beam carrying TR 496 over Mackinaw River in McLean County, Illinois. It was built in 1980, so it is 45 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 75 vehicles a day, roughly 3% of them trucks, projected to reach 76 by 2046. The structure is 175 ft (53.3 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 496 over Mackinaw River built?
It was built in 1980, making it 45 years old in 2025.
What condition is TR 496 over Mackinaw River 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 March 2024.
How much traffic does TR 496 over Mackinaw River carry?
About 75 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is TR 496 over Mackinaw River?
The structure is 175 ft (53.3 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.
Who owns TR 496 over Mackinaw River?
It is owned by the Town or Township Highway Agency.