Structure 310000901001020 · Choctaw County, MS

SR 9 over Big Bywy Creek

Carries SR 9 over Big Bywy Creek, 0.7 Mi N Natchez Trace.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT620 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 7/9

620 ft end to end: about 1.7 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.

Built195571 years old
Length620.1 ft189 m
Daily traffic2,100counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateMississippi
CountyChoctaw
Location0.7 Mi N Natchez Trace
CarriesSR 9
CrossesBig Bywy Creek
Coordinates33.44906, -89.24050

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length620.1 ft (189 m)
Max Span80.1 ft (24.4 m)
Deck Width27.9 ft (8.5 m)
Deck Area1606.5 sq m
Main Spans1
Year Built1955

Traffic

Avg Daily Traffic2,100 (2023)
Truck Traffic8%
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 Number310000901001020

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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