Crawford, Murphy & Tilly Inc. (CMT) is an engineering consulting firm that provides a wide range of services to clients in the aviation, surface transportation, and water resources industries. The company was founded in 1946 and is headquartered in Springfield, Illinois. CMT has over 350 employees and operates offices in Illinois, Missouri, Indiana, Ohio, and Kentucky. The company's services include planning, design, construction management, and environmental consulting. CMT has worked on a number of high-profile projects, including the reconstruction of the St. Louis Gateway Arch grounds and the expansion of the Abraham Lincoln Capital Airport in Springfield.