Structure SA7600000000246 · Washington County, MS

Theobald Street over Horseshoe Bayou

Carries Theobald Street over Horseshoe Bayou, Sec 10 T18n R 8w.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT78 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

78 ft end to end. 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 multi-beam bridge.

Built196066 years old
Length78.1 ft23.8 m
Daily traffic1,400counted 2023
Last inspectedFebruary 2025every 12 months

Location

StateMississippi
CountyWashington
LocationSec 10 T18n R 8w
CarriesTheobald Street
CrossesHorseshoe Bayou
Coordinates33.43162, -91.03245

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length78.1 ft (23.8 m)
Max Span40.0 ft (12.2 m)
Deck Width24.6 ft (7.5 m)
Deck Area178.5 sq m
Main Spans1
Year Built1960

Traffic

Avg Daily Traffic1,400 (2023)
Truck Traffic50%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberSA7600000000246

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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