STV is a leading, award-winning professional firm offering engineering, architectural, planning, environmental and construction management services. We consistently rank among the country's top 25 firms in education, highways, bridges, rail and mass transit. Throughout the United States, STV’s 1,625 professional, technical and support personnel offer services to a broad and ever-expanding client base. We provide planning, environmental, design, program and construction management, and specialty services for the transportation, design-build, institutional and commercial building, advanced technology, industrial and defense markets.