Structure 1823 · Georgetown County, SC

US 17 SB over North Santee River

Carries US 17 SB over North Santee River, 16mi SW Georgetown.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,164 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 6/9

2,164 ft end to end, longest span 120 ft: about 6.0 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 girder bridge.

Built195175 years old
Length2164.4 ft659.7 m
Daily traffic5,100counted 2023
Last inspectedSeptember 2024every 12 months

Location

StateSouth Carolina
CountyGeorgetown
Location16mi SW Georgetown
CarriesUS 17 SB
CrossesNorth Santee River
Coordinates33.20935, -79.38418

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length2164.4 ft (659.7 m)
Max Span120.1 ft (36.6 m)
Deck Width32.8 ft (10 m)
Deck Area6,597 sq m
Main Spans9
Year Built1951

Traffic

Avg Daily Traffic5,100 (2023)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000001823

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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