Mixed-Use Development In Eugene Regional planning in the Eugene-Springfield metropolitan area stresses the interdependence between development patterns and efficient, effective transportation. With the adoption of the Growth Management Study, in 1998, and the regional transportation master plan (TransPlan), in 2001, the concept of mixed-use development became the official growth management policy for the City of Eugene. TransPlan identifies dozens of potential "mixed-use centers" in Eugene and Springfield. If properly planned and developed, these centers will mature into quality neighborhoods that enjoy higher densities, a mix of activities, more transportation options, convenient shopping and services, and amenities. When combined with improved transit, mixed-use centers will reduce the reliance on automobile travel and the need for costly street improvements; slow sprawl onto nearby agricultural and forest lands; and provide a greater variety of housing types inside the urban growth boundary.