US Bridges

WB I-474 over Ill 29

Fair

Tazewell County, Illinois · S Edge of Creve Coeu · Structure no. 090010700000000

Built
1978
47 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
247 ft
3 main spans
Daily traffic
7,600
2023 count
Owner
State
State Highway Agency

About this bridge

WB I-474 over Ill 29 is a steel continuous stringer/multi-beam or girder carrying WB I-474 over Ill 29 in Tazewell County, Illinois. It was built in 1978, so it is 47 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 7,600 vehicles a day, roughly 24% of them trucks, projected to reach 8,585 by 2046. The structure is 247 ft (75.3 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB I-474
CrossesIll 29
LocationS Edge of Creve Coeu
RouteInterstate 474
CountyTazewell County
StateIllinois
Coordinates40.62983, -89.61294
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionMay 2023
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 rating85.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length247 ft (75.3 m)
Longest span105 ft (32 m)
Deck width50 ft (15.2 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2023)
Projected traffic8,585 by 2046
Trucks24%
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
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was WB I-474 over Ill 29 built?

It was built in 1978, making it 47 years old in 2025.

What condition is WB I-474 over Ill 29 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 May 2023.

How much traffic does WB I-474 over Ill 29 carry?

About 7,600 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is WB I-474 over Ill 29?

The structure is 247 ft (75.3 m) long with a longest span of 105 ft (32 m) and a deck 50 ft wide.

Who owns WB I-474 over Ill 29?

It is owned by the State Highway Agency.