US Bridges

EB US 34 over I-74

Fair

Knox County, Illinois · NE of Galesburg · Structure no. 048002000000000

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
—
2023 count
Owner
State
State Highway Agency

About this bridge

EB US 34 over I-74 is a steel continuous stringer/multi-beam or girder carrying EB 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.

No traffic count is recorded. 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 Maps
CarriesEB US 34
CrossesI-74
LocationNE of Galesburg
RouteU.S. Route 34
CountyKnox County
StateIllinois
Coordinates40.98387, -90.33638
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating94.7 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length264 ft (80.5 m)
Longest span87 ft (26.5 m)
Deck width52 ft (16 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic2,752 by 2046
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was EB 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 EB 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 EB US 34 over I-74 carry?

No traffic count is recorded for this structure.

How long is EB 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 EB US 34 over I-74?

It is owned by the State Highway Agency.