FAS 489 Ch 21 over Mackinaw River
FairMcLean County, Illinois · 1.0 MI SW Lexington · Structure no. 057491500000000
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 293 ft
- 4 main spans
- Daily traffic
- 625
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
FAS 489 Ch 21 over Mackinaw River is a steel continuous stringer/multi-beam or girder carrying FAS 489 Ch 21 over Mackinaw River in McLean County, Illinois. It was built in 1964, so it is 61 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 625 vehicles a day, roughly 27% of them trucks, projected to reach 783 by 2046. The structure is 293 ft (89.2 m) long and 32 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 | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 FAS 489 Ch 21 over Mackinaw River built?
It was built in 1964, making it 61 years old in 2025.
What condition is FAS 489 Ch 21 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 July 2024.
How much traffic does FAS 489 Ch 21 over Mackinaw River carry?
About 625 vehicles per day (2024 count), of which roughly 27% are trucks.
How long is FAS 489 Ch 21 over Mackinaw River?
The structure is 293 ft (89.2 m) long with a longest span of 81 ft (24.7 m) and a deck 32 ft wide.
Who owns FAS 489 Ch 21 over Mackinaw River?
It is owned by the County Highway Agency.