Structure 10033 · Georgetown County, SC

US 521 NB over Csx Railroad

Carries US 521 NB over Csx Railroad, Andrews.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT113 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

113 ft end to end. Lengths and the car 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.

Built200620 years old
Length112.9 ft34.4 m
Daily traffic1,250counted 2023
Last inspectedMay 2024every 24 months

Location

StateSouth Carolina
CountyGeorgetown
LocationAndrews
CarriesUS 521 NB
CrossesCsx Railroad
Coordinates33.43194, -79.56722

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length112.9 ft (34.4 m)
Max Span112.9 ft (34.4 m)
Deck Width46.9 ft (14.3 m)
Deck Area491.9 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic1,250 (2023)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000010033

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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