Structure SA1300000000121 · Clay County, MS

Yokohama Road over Unnamed Stream

Carries Yokohama Road over Unnamed Stream, Sec 34 T16s R 6e B.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT360 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

360 ft end to end, longest span 120 ft: about 5 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 tee-beam bridge.

Built201511 years old
Length359.9 ft109.7 m
Daily traffic660counted 2022
Last inspectedJanuary 2024every 24 months

Location

StateMississippi
CountyClay
LocationSec 34 T16s R 6e B
CarriesYokohama Road
CrossesUnnamed Stream
Coordinates33.64078, -88.65290

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length359.9 ft (109.7 m)
Max Span120.1 ft (36.6 m)
Deck Width43.0 ft (13.1 m)
Deck Area1437.1 sq m
Main Spans3
Year Built2015

Traffic

Avg Daily Traffic660 (2022)
Truck Traffic15%
Lanes On Bridge20

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure NumberSA1300000000121

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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