TR 20A over South Fork Lake Fork
FairLogan County, Illinois · 4.5 MI NW Warrensbur · Structure no. 058330100000000
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected December 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 108 ft
- 3 main spans
- Daily traffic
- 35
- 2020 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 20A over South Fork Lake Fork is a prestressed concrete box beam or girders - multiple carrying TR 20A over South Fork Lake Fork in Logan County, Illinois. It was built in 1987, so it is 38 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 35 vehicles a day, roughly 6% of them trucks, projected to reach 35 by 2046. The structure is 108 ft (32.9 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 TR 20A over South Fork Lake Fork built?
It was built in 1987, making it 38 years old in 2025.
What condition is TR 20A over South Fork Lake Fork 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 2023.
How much traffic does TR 20A over South Fork Lake Fork carry?
About 35 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is TR 20A over South Fork Lake Fork?
The structure is 108 ft (32.9 m) long with a longest span of 36 ft (11 m) and a deck 24 ft wide.
Who owns TR 20A over South Fork Lake Fork?
It is owned by the Town or Township Highway Agency.