Structure SA3600000000134 · Lafayette County, MS

Co.road 459 over Yocona River

Carries Co.road 459 over Yocona River, Sec 11 T10s R 1w B.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT230 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

230 ft end to end: about 3 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 multi-beam bridge.

Built196066 years old
Length230.0 ft70.1 m
Daily traffic100counted 2014
Last inspectedDecember 2024every 12 months

Location

StateMississippi
CountyLafayette
LocationSec 11 T10s R 1w B
CarriesCo.road 459
CrossesYocona River
Coordinates34.22007, -89.26386

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length230.0 ft (70.1 m)
Max Span40.0 ft (12.2 m)
Deck Width24.6 ft (7.5 m)
Deck Area525.8 sq m
Main Spans1
Year Built1960

Traffic

Avg Daily Traffic100 (2014)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure NumberSA3600000000134

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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