I-77 SB over Congaree Swamp

Good Condition42 years old47,350 vehicles/day

Location

StateSouth Carolina
CountyRichland
Location5 Mi S Of Columbia
CarriesI-77 SB
CrossesCongaree Swamp
Coordinates33.94088, -81.00433

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length1319.9 ft (402.3 m)
Max Span29.9 ft (9.1 m)
Deck Width59.4 ft (18.1 m)
Deck Area7281.6 sq m
Main Spans44
Year Built1984

Traffic

Avg Daily Traffic47,350 (2023)
Truck Traffic16%
Lanes On Bridge3

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000007831

Nearby Bridges

I-77 NB over Congaree Swamp 0.0 mi Good I-77 SB over S-40-537 0.6 mi Good I-77 NB over S-40-537 0.6 mi Good I-77 NB over Trib To Gills Creek 0.6 mi Good I-77 SB over Trib To Gills Creek 0.6 mi Good I-77 Ramps On/off over Trib To Gills Creek 0.9 mi Good L-40-51 over Gills Creek 0.9 mi Fair I-77 SB over Congaree River 1.0 mi Fair I-77 NB over Congaree River 1.0 mi Fair Sc 48 EB over Gills Creek 1.0 mi Fair