I-55 Busn Loop over US 51 at Bloomington
FairMcLean County, Illinois · JCT Busn 55 & US 51 · Structure no. 057006300000000
- Built
- 1939
- 86 years old, rebuilt 1984
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 167 ft
- 3 main spans
- Daily traffic
- 25,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-55 Busn Loop over US 51 at Bloomington is a steel continuous stringer/multi-beam or girder carrying I-55 Busn Loop over US 51 at Bloomington in McLean County, Illinois. It was built in 1939 and reconstructed in 1984, so it is 86 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 25,000 vehicles a day, roughly 5% of them trucks, projected to reach 23,533 by 2046. The structure is 167 ft (50.9 m) long and 59 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-55 Busn Loop over US 51 at Bloomington built?
It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1984.
What condition is I-55 Busn Loop over US 51 at Bloomington 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 March 2024.
How much traffic does I-55 Busn Loop over US 51 at Bloomington carry?
About 25,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is I-55 Busn Loop over US 51 at Bloomington?
The structure is 167 ft (50.9 m) long with a longest span of 64 ft (19.5 m) and a deck 59 ft wide.
Who owns I-55 Busn Loop over US 51 at Bloomington?
It is owned by the State Highway Agency.