Structure 8159 · Georgetown County, SC

US 17 NB over Sampit River_& S-103

Carries US 17 NB over Sampit River_& S-103, In Georgetown.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,992 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

2,992 ft end to end, longest span 180 ft: about 8.3 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.

Built198838 years old
Length2992.5 ft912.1 m
Daily traffic12,600counted 2023
Last inspectedMay 2024every 24 months

Location

StateSouth Carolina
CountyGeorgetown
LocationIn Georgetown
CarriesUS 17 NB
CrossesSampit River_& S-103
Coordinates33.35799, -79.29422

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length2992.5 ft (912.1 m)
Max Span180.1 ft (54.9 m)
Deck Width39.4 ft (12 m)
Deck Area10945.2 sq m
Main Spans11
Year Built1988

Traffic

Avg Daily Traffic12,600 (2023)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000008159

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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