Structure SA1400000000108 · Coahoma County, MS

Moon Road over Yazoo Pass

Carries Moon Road over Yazoo Pass, Sec 35 T30n R 3w B.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

171 ft end to end, longest span 19 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 channel-beam bridge.

Built197254 years old
Length171.3 ft52.2 m
Daily traffic800counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateMississippi
CountyCoahoma
LocationSec 35 T30n R 3w B
CarriesMoon Road
CrossesYazoo Pass
Coordinates34.42194, -90.47556

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length171.3 ft (52.2 m)
Max Span19.0 ft (5.8 m)
Deck Width24.6 ft (7.5 m)
Deck Area391.5 sq m
Main Spans9
Year Built1972

Traffic

Avg Daily Traffic800 (2024)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure NumberSA1400000000108

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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