US Bridges

US 34 EB over US 150

Fair

Knox County, Illinois · N Cl of Galesburg · Structure no. 048002200000000

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
239 ft
4 main spans
Daily traffic
12,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 EB over US 150 is a steel continuous stringer/multi-beam or girder carrying US 34 EB over US 150 in Knox County, Illinois. It was built in 1965, 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 12,900 vehicles a day, roughly 19% of them trucks, projected to reach 6,262 by 2046. The structure is 239 ft (72.8 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 34 EB
CrossesUS 150
LocationN Cl of Galesburg
RouteU.S. Route 34
CountyKnox County
StateIllinois
Coordinates40.97891, -90.38277
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length239 ft (72.8 m)
Longest span74 ft (22.6 m)
Deck width52 ft (15.7 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,900 (2023)
Projected traffic6,262 by 2046
Trucks19%
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 US 34 EB over US 150 built?

It was built in 1965, making it 60 years old in 2025.

What condition is US 34 EB over US 150 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 September 2024.

How much traffic does US 34 EB over US 150 carry?

About 12,900 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is US 34 EB over US 150?

The structure is 239 ft (72.8 m) long with a longest span of 74 ft (22.6 m) and a deck 52 ft wide.

Who owns US 34 EB over US 150?

It is owned by the State Highway Agency.