Structure 388 · Calhoun County, SC

S-9-24 over Bates Mill Creek

Carries S-9-24 over Bates Mill Creek, 4 Mi N ST Mathews.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 4 of 9.

How ratings work
Culvertsets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 4/9

A culvert 32 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built193096 years old
Length31.8 ft9.7 m
Daily traffic800counted 2023
Last inspectedJanuary 2025every 12 months

Location

StateSouth Carolina
CountyCalhoun
Location4 Mi N ST Mathews
CarriesS-9-24
CrossesBates Mill Creek
Coordinates33.72253, -80.78002

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length31.8 ft (9.7 m)
Max Span9.8 ft (3 m)
Deck Width31.8 ft (9.7 m)
Deck Area94.1 sq m
Main Spans3
Year Built1930

Traffic

Avg Daily Traffic800 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000000388

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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