Structure 6188 · Cape Girardeau County, MO

Is 55 S over Diversion Channel

Carries Is 55 S over Diversion Channel, S 26 T 30 N R 13 E.

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
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,471 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

1,471 ft end to end, longest span 150 ft: about 4.1 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.

Built1949rebuilt 1989
Length1471.1 ft448.4 m
Daily traffic22,967counted 2024
Last inspectedApril 2024every 24 months

Location

StateMissouri
CountyCape Girardeau
LocationS 26 T 30 N R 13 E
CarriesIs 55 S
CrossesDiversion Channel
Coordinates37.24623, -89.56722

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1471.1 ft (448.4 m)
Max Span149.9 ft (45.7 m)
Deck Width39.4 ft (12 m)
Deck Area5380.8 sq m
Main Spans3
Year Built1949 (reconstructed 1989)

Traffic

Avg Daily Traffic22,967 (2024)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number6188

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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