Structure 31000570210729A · Greene County, MS

SR 57 over Relief

Carries SR 57 over Relief, 1.0 Mi N SR 63.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT590 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

590 ft end to end, longest span 39 ft: about 1.6 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.

Built201115 years old
Length589.9 ft179.8 m
Daily traffic650counted 2023
Last inspectedApril 2024every 24 months

Location

StateMississippi
CountyGreene
Location1.0 Mi N SR 63
CarriesSR 57
CrossesRelief
Coordinates31.15682, -88.49991

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length589.9 ft (179.8 m)
Max Span39.0 ft (11.9 m)
Deck Width42.3 ft (12.9 m)
Deck Area2319.4 sq m
Main Spans15
Year Built2011

Traffic

Avg Daily Traffic650 (2023)
Truck Traffic23%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number31000570210729A

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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