Structure 310042904000370 · Leake County, MS

SR 429 over Yockanookany River

Carries SR 429 over Yockanookany River, 1.3 Mi S SR 43.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT816 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

816 ft end to end, longest span 138 ft: about 2.3 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.

Built20179 years old
Length815.6 ft248.6 m
Daily traffic520counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateMississippi
CountyLeake
Location1.3 Mi S SR 43
CarriesSR 429
CrossesYockanookany River
Coordinates32.85168, -89.64970

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length815.6 ft (248.6 m)
Max Span138.1 ft (42.1 m)
Deck Width36.7 ft (11.2 m)
Deck Area2784.3 sq m
Main Spans3
Year Built2017

Traffic

Avg Daily Traffic520 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number310042904000370

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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