I-74 WB over Rock Creek
FairMcLean County, Illinois · 7.2 MI E of Ill 117 · Structure no. 057004300000000
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2023
- Type
- Slab
- Concrete Continuous
- Length
- 85 ft
- 3 main spans
- Daily traffic
- 14,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-74 WB over Rock Creek is a concrete continuous slab carrying I-74 WB over Rock Creek in McLean County, Illinois. It was built in 1964, so it is 61 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 14,200 vehicles a day, roughly 18% of them trucks, projected to reach 14,200 by 2046. The structure is 85 ft (25.9 m) long and 44 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-74 WB over Rock Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is I-74 WB over Rock Creek 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 2023.
How much traffic does I-74 WB over Rock Creek carry?
About 14,200 vehicles per day (2023 count), of which roughly 18% are trucks.
How long is I-74 WB over Rock Creek?
The structure is 85 ft (25.9 m) long with a longest span of 31 ft (9.5 m) and a deck 44 ft wide.
Who owns I-74 WB over Rock Creek?
It is owned by the State Highway Agency.