Structure 2198 · Lancaster County, SC

US 521 over Gills Creek

Carries US 521 over Gills Creek, City Of Lancaster.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT70 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 70 ft across. 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, so those are drawn as typical for a culvert.

Built192997 years old
Length69.9 ft21.3 m
Daily traffic10,400counted 2023
Last inspectedAugust 2024every 24 months

Location

StateSouth Carolina
CountyLancaster
LocationCity Of Lancaster
CarriesUS 521
CrossesGills Creek
Coordinates34.72989, -80.77610

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length69.9 ft (21.3 m)
Max Span69.9 ft (21.3 m)
Deck Width67.3 ft (20.5 m)
Deck Area436.6 sq m
Main Spans1
Year Built1929

Traffic

Avg Daily Traffic10,400 (2023)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000002198

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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