FAI 70 WB over Highland Silver Lake
FairMadison County, Illinois · 2.8 M E Ill 143 · Structure no. 060003400000000
- Built
- 1962
- 63 years old, rebuilt 1987
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 177 ft
- 3 main spans
- Daily traffic
- 11,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
FAI 70 WB over Highland Silver Lake is a steel continuous stringer/multi-beam or girder carrying FAI 70 WB over Highland Silver Lake in Madison County, Illinois. It was built in 1962 and reconstructed in 1987, so it is 63 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 11,800 vehicles a day, roughly 41% of them trucks, projected to reach 12,680 by 2046. The structure is 177 ft (53.9 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAI 70 WB over Highland Silver Lake built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1987.
What condition is FAI 70 WB over Highland Silver Lake 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 December 2024.
How much traffic does FAI 70 WB over Highland Silver Lake carry?
About 11,800 vehicles per day (2023 count), of which roughly 41% are trucks.
How long is FAI 70 WB over Highland Silver Lake?
The structure is 177 ft (53.9 m) long with a longest span of 64 ft (19.6 m) and a deck 42 ft wide.
Who owns FAI 70 WB over Highland Silver Lake?
It is owned by the State Highway Agency.