Structure SA0400000000138 · Attala County, MS

Co. Road 3122 over Bch Of Zilpha Creek

Carries Co. Road 3122 over Bch Of Zilpha Creek, Sec 21 T16n R 6e B.

Overall conditionGood

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

How ratings work
Deck8/9 · Very 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 FT220 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

220 ft end to end, longest span 60 ft: 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 slab bridge.

Built200125 years old
Length219.8 ft67 m
Daily traffic230counted 2024
Last inspectedApril 2024every 24 months

Location

StateMississippi
CountyAttala
LocationSec 21 T16n R 6e B
CarriesCo. Road 3122
CrossesBch Of Zilpha Creek
Coordinates33.23766, -89.69632

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length219.8 ft (67 m)
Max Span59.7 ft (18.2 m)
Deck Width30.8 ft (9.4 m)
Deck Area629.8 sq m
Main Spans5
Year Built2001

Traffic

Avg Daily Traffic230 (2024)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberSA0400000000138

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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