Structure 90010600000000 · Tazewell County, IL

EB I-474 over Ill 29

Carries EB I-474 over Ill 29, S. Edge Of CR Coeur.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT244 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

244 ft end to end, longest span 109 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built197848 years old
Length244.1 ft74.4 m
Daily traffic7,600counted 2023
Last inspectedMay 2023every 24 months

Location

StateIllinois
CountyTazewell
LocationS. Edge Of CR Coeur
CarriesEB I-474
CrossesIll 29
Coordinates40.62986, -89.61318

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length244.1 ft (74.4 m)
Max Span108.9 ft (33.2 m)
Deck Width41.3 ft (12.6 m)
Deck Area937.4 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic7,600 (2023)
Truck Traffic24%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number090010600000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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