The South Carolina Department of Transportation hired CALYX to replace two deficient bridges along SC 5 in Lancaster and York Counties. CALYX provided a number of services to complete this project, including surveying, subsurface utility engineering, planning, roadway and bridge design, hydraulic/drainage design, and permitting/environmental engineering. The existing bridge over the Catawba River and CSX Railroad was replaced with a new 1,745-foot-long concrete structure. An existing overflow relief bridge was also replaced with a new 422-foot-long structure. A top priority bridge replacement project, CALYX used a turnkey delivery approach and a compressed production schedule to successfully complete these projects on time.