Structure SA3000000000217 · Jackson County, MS

Mantou Street over Relief

Carries Mantou Street over Relief, Sec 13 T 8s R 6w.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

31 ft end to end. Lengths and the car 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 channel-beam bridge.

Built20206 years old
Length30.8 ft9.4 m
Daily traffic200counted 2024
Last inspectedJune 2024every 24 months

Location

StateMississippi
CountyJackson
LocationSec 13 T 8s R 6w
CarriesMantou Street
CrossesRelief
Coordinates30.35056, -88.54611

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length30.8 ft (9.4 m)
Max Span30.8 ft (9.4 m)
Deck Width25.6 ft (7.8 m)
Deck Area73.3 sq m
Main Spans1
Year Built2020

Traffic

Avg Daily Traffic200 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure NumberSA3000000000217

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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