I-55 SB over Timber CR
FairMcLean County, Illinois · 1 MI N of Funksgrove · Structure no. 057015900000000
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 196 ft
- 3 main spans
- Daily traffic
- 11,050
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-55 SB over Timber CR is a prestressed concrete continuous stringer/multi-beam or girder carrying I-55 SB over Timber CR in McLean County, Illinois. It was built in 1975, so it is 50 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 11,050 vehicles a day, roughly 37% of them trucks, projected to reach 11,615 by 2046. The structure is 196 ft (59.7 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-55 SB over Timber CR built?
It was built in 1975, making it 50 years old in 2025.
What condition is I-55 SB over Timber CR 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 May 2024.
How much traffic does I-55 SB over Timber CR carry?
About 11,050 vehicles per day (2023 count), of which roughly 37% are trucks.
How long is I-55 SB over Timber CR?
The structure is 196 ft (59.7 m) long with a longest span of 64 ft (19.4 m) and a deck 42 ft wide.
Who owns I-55 SB over Timber CR?
It is owned by the State Highway Agency.