Structure SA6500000000043 · Smith County, MS

Smith Co 18-3 over Nelse Branch

Carries Smith Co 18-3 over Nelse Branch, Sec 15 T 2n R 8e.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

100 ft end to end, longest span 31 ft. Lengths and the car 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.

Built200026 years old
Length100.1 ft30.5 m
Daily traffic50counted 2024
Last inspectedOctober 2024every 24 months

Location

StateMississippi
CountySmith
LocationSec 15 T 2n R 8e
CarriesSmith Co 18-3
CrossesNelse Branch
Coordinates32.01755, -89.47100

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length100.1 ft (30.5 m)
Max Span31.2 ft (9.5 m)
Deck Width25.6 ft (7.8 m)
Deck Area237.9 sq m
Main Spans400
Year Built2000

Traffic

Avg Daily Traffic50 (2024)
Truck Traffic8%
Lanes On Bridge20

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure NumberSA6500000000043

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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