Structure 1159 · Abbeville County, SC

Sc 184 over Rocky River

Carries Sc 184 over Rocky River, 14.8mi NW Abbev.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT521 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

521 ft end to end, longest span 80 ft: about 7 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built194185 years old
Length520.7 ft158.7 m
Daily traffic1,600counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateSouth Carolina
CountyAbbeville
Location14.8mi NW Abbev
CarriesSc 184
CrossesRocky River
Coordinates34.31312, -82.57879

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length520.7 ft (158.7 m)
Max Span80.1 ft (24.4 m)
Deck Width25.6 ft (7.8 m)
Deck Area1237.9 sq m
Main Spans8
Year Built1941

Traffic

Avg Daily Traffic1,600 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000001159

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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