Structure 11000550542523A · Panola County, MS

I 55 over SR 315

Carries I 55 over SR 315, I 55 Over SR 315.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT163 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

163 ft end to end, longest span 63 ft: about 2 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 box-beam bridge.

Built1959rebuilt 2020
Length163.1 ft49.7 m
Daily traffic12,500counted 2023
Last inspectedMarch 2024every 24 months

Location

StateMississippi
CountyPanola
LocationI 55 Over SR 315
CarriesI 55
CrossesSR 315
Coordinates34.43736, -89.89868

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length163.1 ft (49.7 m)
Max Span63.0 ft (19.2 m)
Deck Width29.9 ft (9.1 m)
Deck Area452.3 sq m
Main Spans3
Year Built1959 (reconstructed 2020)

Traffic

Avg Daily Traffic12,500 (2023)
Truck Traffic26%
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number11000550542523A

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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