Structure 82028800000000 · St. Clair County, IL

Mlk Ramp 2 WB over Il 3 Trra Uprr Moav 55-6

Carries Mlk Ramp 2 WB over Il 3 Trra Uprr Moav 55-6, West Approach Mlk.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT804 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

804 ft end to end, longest span 132 ft: about 2.2 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 multi-beam bridge.

Built199927 years old
Length804.1 ft245.1 m
Daily traffic1,150counted 2024
Last inspectedMay 2023every 24 months

Location

StateIllinois
CountySt. Clair
LocationWest Approach Mlk
CarriesMlk Ramp 2 WB
CrossesIl 3 Trra Uprr Moav 55-6
Coordinates38.62883, -90.15736

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length804.1 ft (245.1 m)
Max Span131.9 ft (40.2 m)
Deck Width29.2 ft (8.9 m)
Deck Area2181.4 sq m
Main Spans7
Year Built1999

Traffic

Avg Daily Traffic1,150 (2024)
Truck Traffic7%
Lanes On Bridge1
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 Number082028800000000

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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