Hanson specializes in engineering, planning and a range of allied services. Headquartered in Springfield, Ill., we re a nationally-recognized, award-winning consulting firm with offices across the United States. Since 1954, our clients have known us as a trusted partner, committed to their success and capable of handling challenging projects. From planning and design to construction and completion, we ll take a hands-on approach to your project with a clear focus on your goals, budget and timeline.