According to transport policy objectives, limiting the energy use and climate impact of the transport system, including infrastructure, is an important task for the Swedish Transport Administration (STA). Choices that affect climate performance of transport infrastructure are made at different stages in the planning process. The STA has developed the Klimatkalkyl climate calculation model for an efficient, consistent life cycle calculation of infrastructure greenhouse gas emissions and energy use. As a result of the model’s implementation in planning and procurement, a life cycle perspective is now being used on a regular basis for environmental procurement claims, decision support and monitoring purposes.