Structure 2860 · Union County, SC

Sc 72 over Tyger River

Carries Sc 72 over Tyger River, 6.9 Mi W Of Carlisle.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT752 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 4/9 · sets the ratingSubstructure 5/9

752 ft end to end, longest span 67 ft: about 2.1 football fields. 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.

Built195868 years old
Length752.3 ft229.3 m
Daily traffic2,500counted 2023
Last inspectedSeptember 2024every 12 months

Location

StateSouth Carolina
CountyUnion
Location6.9 Mi W Of Carlisle
CarriesSc 72
CrossesTyger River
Coordinates34.53597, -81.54792

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length752.3 ft (229.3 m)
Max Span67.3 ft (20.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area2247.1 sq m
Main Spans3
Year Built1958

Traffic

Avg Daily Traffic2,500 (2023)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number000000000002860

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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