I-520 Palmetto Parkway, Phase II

UIG was chosen by the SCDOT to construct a 5.5 mile grade separated divided parkway extension w/6 miles of side roads/ramps and 5 interchanges, 4.5M cubic yards earthwork, 200K square yards concrete pavement, 250K tons asphalt pavement, 140K square feet retaining walls, culverts, noise walls, and 12 interchange/overpass/underpass bridges totaling 2,280 linear feet/121,000 square feet with major woven interchange at I-20 and US 25. (Delivered on schedule in 36 months with no claims). Triplett-King provided project management, bridge design and CEI services for this project. Coleman-Snow provided roadway design and utility coordination services.


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