Structure SA4200000000003 · Leflore County, MS

Co RD 528 over Four Mile Bayou

Carries Co RD 528 over Four Mile Bayou, Sec 29 T17n R 2w B.

Overall conditionPoor

Set by its lowest-rated component: Superstructure and Substructure at 3 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating3/9 · Serious
Substructuresets the rating3/9 · Serious
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT361 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 3/9 · sets the ratingSubstructure 3/9 · sets the rating

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

Built195769 years old
Length360.9 ft110 m
Daily traffic60counted 2015
Last inspectedJanuary 2023every 24 months

Location

StateMississippi
CountyLeflore
LocationSec 29 T17n R 2w B
CarriesCo RD 528
CrossesFour Mile Bayou
Coordinates33.30602, -90.42648

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length360.9 ft (110 m)
Max Span19.0 ft (5.8 m)
Deck Width24.6 ft (7.5 m)
Deck Area825 sq m
Main Spans19
Year Built1957

Traffic

Avg Daily Traffic60 (2015)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberSA4200000000003

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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