Structure 410005501506940 · Copiah County, MS

Old SR 27 over I 55

Carries Old SR 27 over I 55, 1.5 Mi S SR 27.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT252 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

252 ft end to end, longest span 70 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.

Built196066 years old
Length252.0 ft76.8 m
Daily traffic1,800counted 2023
Last inspectedAugust 2023every 24 months

Location

StateMississippi
CountyCopiah
Location1.5 Mi S SR 27
CarriesOld SR 27
CrossesI 55
Coordinates31.99404, -90.37115

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length252.0 ft (76.8 m)
Max Span69.9 ft (21.3 m)
Deck Width36.1 ft (11 m)
Deck Area844.8 sq m
Main Spans4
Year Built1960

Traffic

Avg Daily Traffic1,800 (2023)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number410005501506940

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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