US Bridges

WB I 74 over BNSF(079799R)

Fair

Knox County, Illinois · 0.73MI S of US 34 · Structure no. 048010100000000

Built
2017
8 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
324 ft
4 main spans
Daily traffic
8,850
2023 count
Owner
State
State Highway Agency

About this bridge

WB I 74 over BNSF(079799R) is a steel continuous stringer/multi-beam or girder carrying WB I 74 over BNSF(079799R) in Knox County, Illinois. It was built in 2017, so it is 8 years old, younger 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 8,850 vehicles a day, roughly 27% of them trucks, projected to reach 8,787 by 2046. The structure is 324 ft (98.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB I 74
CrossesBNSF(079799R)
Location0.73MI S of US 34
RouteInterstate 74
CountyKnox County
StateIllinois
Coordinates40.97306, -90.33441
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length324 ft (98.8 m)
Longest span117 ft (35.7 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,850 (2023)
Projected traffic8,787 by 2046
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 WB I 74 over BNSF(079799R) built?

It was built in 2017, making it 8 years old in 2025.

What condition is WB I 74 over BNSF(079799R) 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 July 2024.

How much traffic does WB I 74 over BNSF(079799R) carry?

About 8,850 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is WB I 74 over BNSF(079799R)?

The structure is 324 ft (98.8 m) long with a longest span of 117 ft (35.7 m) and a deck 43 ft wide.

Who owns WB I 74 over BNSF(079799R)?

It is owned by the State Highway Agency.