Hill-Burton Act, a 1946 amendment to the U.S. Public Health Service Act authorizing grants to states for surveying their hospital and public health center needs and for planning and constructing additional facilities. Subsequent amendments authorized federal funding for as much as two thirds of the cost of construction projects and broadened the scope of the legislation to include diagnostic and treatment centers, long-term treatment centers, and nursing homes and to aid in modernization of existing hospitals. Also called Hospital Survey and Construction Act.