Structure 3456 · Pickens County, SC

C-39-1929 over Trib N Fork 12 Mile Ck

Carries C-39-1929 over Trib N Fork 12 Mile Ck, 3 Mi NW Of Pickens.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

30 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 channel-beam bridge.

Built196066 years old
Length29.9 ft9.1 m
Daily traffic200counted 2023
Last inspectedMarch 2024every 12 months

Location

StateSouth Carolina
CountyPickens
Location3 Mi NW Of Pickens
CarriesC-39-1929
CrossesTrib N Fork 12 Mile Ck
Coordinates34.91747, -82.71733

Physical Characteristics

MaterialPrestressed Concrete
DesignChannel Beam
Total Length29.9 ft (9.1 m)
Max Span29.9 ft (9.1 m)
Deck Width23.3 ft (7.1 m)
Deck Area64.6 sq m
Main Spans1
Year Built1960

Traffic

Avg Daily Traffic200 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000003456

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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