Structure SA0800000000086 · Carroll County, MS

Co RD 150 over Merrill Branch

Carries Co RD 150 over Merrill Branch, Sec 19 T18n R 3e.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT97 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

97 ft end to end, longest span 23 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 multi-beam bridge.

Built1948rebuilt 2019
Length97.4 ft29.7 m
Daily traffic40counted 2020
Last inspectedSeptember 2024every 12 months

Location

StateMississippi
CountyCarroll
LocationSec 19 T18n R 3e
CarriesCo RD 150
CrossesMerrill Branch
Coordinates33.41444, -90.02397

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length97.4 ft (29.7 m)
Max Span22.6 ft (6.9 m)
Deck Width20.0 ft (6.1 m)
Deck Area181.2 sq m
Main Spans6
Year Built1948 (reconstructed 2019)

Traffic

Avg Daily Traffic40 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure NumberSA0800000000086

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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