Founded in 1987, Ko & Associates is a full-service engineering consulting firm that serves public and private clients throughout southeast United States. The company provides roadway and structure design, transportation, planning, traffic engineering and safety inspection services. It offers roadway planning, noise study, bridge replacement and pavement marking solutions. Ko & Associates undertakes projects for bridges, culverts, stream and railroad crossings, highway underpasses, pedestrian overpasses and retaining walls. The company operates a highway design division that offers flood study, map modification and bridge opening analysis services. It coordinates the maintenance of traffic and signing issues. Ko & Associates is located in Raleigh, N.C.