Abstract:Complete streets are an infrastructure-oriented intervention intended to improve social, economic, and environmental conditions of a neighborhood or corridor. However, few qualitative and quantitative approaches for objective evaluation have been developed that can help evaluate or anticipate the environmental effects of complete streets interventions. Furthermore, there is no life cycle assessment (LCA)-based tool for verifying/quantifying the full system, life cycle expected savings in impacts of implementing complete streets versus conventional ones. This study addresses this gap by providing a quantifying of designing urban streets under complete streets guidelines versus conventional ones, using LCA. The initial results indicate that application of the complete streets networks to streets where there is little negative impact on vehicle drive cycles from speed change will have the most likelihood of causing overall net reductions in environmental impacts.