TR 470 over Mackinaw River
GoodMcLean County, Illinois · 2.0MI SE Pleasanthil · Structure no. 057493000000000
- Built
- 1981
- 44 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 178 ft
- 3 main spans
- Daily traffic
- 50
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 470 over Mackinaw River is a steel continuous stringer/multi-beam or girder carrying TR 470 over Mackinaw River in McLean County, Illinois. It was built in 1981, so it is 44 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 50 vehicles a day, roughly 4% of them trucks, projected to reach 51 by 2046. The structure is 178 ft (54.3 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 470 over Mackinaw River built?
It was built in 1981, making it 44 years old in 2025.
What condition is TR 470 over Mackinaw River 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 March 2024.
How much traffic does TR 470 over Mackinaw River carry?
About 50 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is TR 470 over Mackinaw River?
The structure is 178 ft (54.3 m) long with a longest span of 64 ft (19.5 m) and a deck 25 ft wide.
Who owns TR 470 over Mackinaw River?
It is owned by the Town or Township Highway Agency.