Health impact assessment (HIA) is a process whereby the health impacts of a proposed policy or program are systematically evaluated and summarized to inform decision-making. The purpose of this project was to carry out an HIA to evaluate the draft Clark County, Washington Pedestrian and Bicycle Master Plans to ensure that the 20-year Plans maximize the potential health benefits of modifications to the pedestrian environment in Clark County. The HIA aimed to provide planners with input into projected youth and adult health impacts of proposed implementation strategies, including Safe Routes to School programs. Existing data was utilized from the US Census, statewide health surveys, school districts, vital statistics registry and population estimates. Geographic Information Systems (GIS) was used to assess environmental data, and key informant interviews were conducted with policy makers to determine how they can use HIA's in decision-making
