US 521 over Stony Run

Fair Condition95 years old3,100 vehicles/day

Location

StateSouth Carolina
CountyWilliamsburg
Location6.0 Mi S Of Kingstree
CarriesUS 521
CrossesStony Run
Coordinates33.57911, -79.81641

Condition Ratings

Overall ConditionFair
Channel/Waterway7 (Good)
Culvert6 (Satisfactory)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length24.9 ft (7.6 m)
Max Span12.1 ft (3.7 m)
Deck Width53.5 ft (16.3 m)
Deck Area123.9 sq m
Main Spans2
Year Built1931 (reconstructed 1965)

Traffic

Avg Daily Traffic3,100 (2023)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000000586

Nearby Bridges

Sc 377 over Black River 0.5 mi Good Sc 377 over Black River Swamp (1) 0.8 mi Good Sc 377 over Black River Swamp (2) 1.0 mi Good S-45-143 over Thorntree Swamp 1.2 mi Poor Sc 377 over Black River Swamp (3) 1.3 mi Good US 521 over Thorntree Swamp 1.3 mi Fair S-45-453 over Thorntree Swamp 1.7 mi Fair US 521 over S.c.l. Railroad 2.4 mi Fair S-45-570 over Thorntree Swamp 2.5 mi Good S-45-142 over Boggy Swamp 2.9 mi Good