Harrison Infrastructure Group is a multidisciplinary engineering consultancy based in Queensland, Australia. With offices in Brisbane, Toowoomba, Sunshine Coast, Rockhampton, Bundaberg, and Roma, HIG specializes in engineering, design, and project management for infrastructure and development projects. Established as an industry leader, the firm is known for its contributions to the Lower Order Road Design Guidelines and offers innovative, collaborative solutions. HIG’s core values—Integrity, Excellence, Respect, Ingenuity, and Collaboration—drive its commitment to delivering exceptional outcomes for clients and communities across Queensland.