Structure 82014500000000 · St. Clair County, IL

Il3nb To 55/64wb " over Uprr A B C Il 3 SB Ramp

Carries Il3nb To 55/64wb " over Uprr A B C Il 3 SB Ramp, Pier P1 To Pier A5.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,559 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

1,559 ft end to end, longest span 134 ft: about 4.3 football fields. 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 girder bridge.

Built1969rebuilt 2004
Length1559.1 ft475.2 m
Daily traffic4,950counted 2024
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountySt. Clair
LocationPier P1 To Pier A5
CarriesIl3nb To 55/64wb "
CrossesUprr A B C Il 3 SB Ramp
Coordinates38.61563, -90.17171

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length1559.1 ft (475.2 m)
Max Span133.9 ft (40.8 m)
Deck Width27.9 ft (8.5 m)
Deck Area4039.2 sq m
Main Spans15
Year Built1969 (reconstructed 2004)

Traffic

Avg Daily Traffic4,950 (2024)
Truck Traffic8%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number082014500000000

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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