WB US 34 over I-74
FairKnox County, Illinois · NE of Galesburg · Structure no. 048001900000000
- Built
- 1965
- 60 years old, rebuilt 2010
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 264 ft
- 4 main spans
- Daily traffic
- 5,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
WB US 34 over I-74 is a steel continuous stringer/multi-beam or girder carrying WB US 34 over I-74 in Knox County, Illinois. It was built in 1965 and reconstructed in 2010, so it is 60 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 5 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 5,700 vehicles a day, roughly 14% of them trucks, projected to reach 2,752 by 2046. The structure is 264 ft (80.5 m) long and 52 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB US 34 over I-74 built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2010.
What condition is WB US 34 over I-74 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 November 2023.
How much traffic does WB US 34 over I-74 carry?
About 5,700 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is WB US 34 over I-74?
The structure is 264 ft (80.5 m) long with a longest span of 87 ft (26.5 m) and a deck 52 ft wide.
Who owns WB US 34 over I-74?
It is owned by the State Highway Agency.