Structure 2591 · Orangeburg County, SC

Sc 70 over S. Edisto River

Carries Sc 70 over S. Edisto River, 16mi SW Of Orangeburg.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT450 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

450 ft end to end, longest span 30 ft: about 6 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 tee-beam bridge.

Built195769 years old
Length450.1 ft137.2 m
Daily traffic3,200counted 2023
Last inspectedNovember 2023every 24 months

Location

StateSouth Carolina
CountyOrangeburg
Location16mi SW Of Orangeburg
CarriesSc 70
CrossesS. Edisto River
Coordinates33.37568, -81.08229

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length450.1 ft (137.2 m)
Max Span29.9 ft (9.1 m)
Deck Width29.5 ft (9 m)
Deck Area1234.8 sq m
Main Spans15
Year Built1957

Traffic

Avg Daily Traffic3,200 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number000000000002591

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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