Structure SA7600000000277 · Washington County, MS

Collier Road over Ditch No 16

Carries Collier Road over Ditch No 16, Sec 33 T19n R 6w.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

57 ft end to end, longest span 19 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.

Built197749 years old
Length57.1 ft17.4 m
Daily traffic50counted 2021
Last inspectedDecember 2024every 12 months

Location

StateMississippi
CountyWashington
LocationSec 33 T19n R 6w
CarriesCollier Road
CrossesDitch No 16
Coordinates33.44556, -90.81547

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length57.1 ft (17.4 m)
Max Span19.0 ft (5.8 m)
Deck Width24.6 ft (7.5 m)
Deck Area130.5 sq m
Main Spans3
Year Built1977

Traffic

Avg Daily Traffic50 (2021)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberSA7600000000277

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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