US Bridges

WB I-474 over EB I-74

Poor

Tazewell County, Illinois · 2 MI W of Morton · Structure no. 090010200000000

Built
1979
46 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
353 ft
3 main spans
Daily traffic
7,100
2023 count
Owner
State
State Highway Agency

About this bridge

WB I-474 over EB I-74 is a steel continuous stringer/multi-beam or girder carrying WB I-474 over EB I-74 in Tazewell County, Illinois. It was built in 1979, so it is 46 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 7,100 vehicles a day, roughly 25% of them trucks, projected to reach 7,979 by 2046. The structure is 353 ft (107.6 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesWB I-474
CrossesEB I-74
Location2 MI W of Morton
RouteInterstate 474
CountyTazewell County
StateIllinois
Coordinates40.63307, -89.52286
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length353 ft (107.6 m)
Longest span178 ft (54.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2023)
Projected traffic7,979 by 2046
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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-474 over EB I-74 built?

It was built in 1979, making it 46 years old in 2025.

What condition is WB I-474 over EB I-74 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does WB I-474 over EB I-74 carry?

About 7,100 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is WB I-474 over EB I-74?

The structure is 353 ft (107.6 m) long with a longest span of 178 ft (54.3 m) and a deck 43 ft wide.

Who owns WB I-474 over EB I-74?

It is owned by the State Highway Agency.