I-39/US 51 SB over Trib Six Mile Creek
GoodMcLean County, Illinois · 3.69 MI N of I-55 · Structure no. 057021000000000
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 71 ft
- 1 main span
- Daily traffic
- 8,650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-39/US 51 SB over Trib Six Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying I-39/US 51 SB over Trib Six Mile Creek in McLean County, Illinois. It was built in 1989, so it is 36 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 8,650 vehicles a day, roughly 37% of them trucks, projected to reach 9,343 by 2046. The structure is 71 ft (21.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-39/US 51 SB over Trib Six Mile Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is I-39/US 51 SB over Trib Six Mile Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.
How much traffic does I-39/US 51 SB over Trib Six Mile Creek carry?
About 8,650 vehicles per day (2023 count), of which roughly 37% are trucks.
How long is I-39/US 51 SB over Trib Six Mile Creek?
The structure is 71 ft (21.5 m) long with a longest span of 68 ft (20.7 m) and a deck 43 ft wide.
Who owns I-39/US 51 SB over Trib Six Mile Creek?
It is owned by the State Highway Agency.