Engineers Without Borders' work is capable of widespread impact in Ghana. We started off based in only a few of the nation's 107 regional districts; learning the out-in-the-field realities and building tools to address them. We are now scaling up proven, effective approaches to infrastructure development from a small number of districts, to a national level. Specifically, we are institutionalizing evidence-based infrastructure planning at the district, regional and national levels. To ensure we have an enduring impact, EWB is building the capacity of district staff to manage and execute these evidence based decisions, teaching these skills to the Ghanains who are best able to implement them from their positions as managers and field experts.