FAI 55 SB over Union Pacific RR
FairGrundy County, Illinois · 3.2 MI S of Reed RD · Structure no. 032000800000000
- Built
- 1955
- 70 years old, rebuilt 1995
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 243 ft
- 3 main spans
- Daily traffic
- 12,050
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
FAI 55 SB over Union Pacific RR is a steel continuous stringer/multi-beam or girder carrying FAI 55 SB over Union Pacific RR in Grundy County, Illinois. It was built in 1955 and reconstructed in 1995, so it is 70 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 12,050 vehicles a day, roughly 30% of them trucks, projected to reach 12,840 by 2046. The structure is 243 ft (74.2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FAI 55 SB over Union Pacific RR built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1995.
What condition is FAI 55 SB over Union Pacific RR 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 January 2024.
How much traffic does FAI 55 SB over Union Pacific RR carry?
About 12,050 vehicles per day (2023 count), of which roughly 30% are trucks.
How long is FAI 55 SB over Union Pacific RR?
The structure is 243 ft (74.2 m) long with a longest span of 93 ft (28.2 m) and a deck 42 ft wide.
Who owns FAI 55 SB over Union Pacific RR?
It is owned by the State Highway Agency.