Sustainability is a general concept that relates to the ability of humankind to continue to grow and thrive on a planet with limited resources. Focusing on built infrastructure can narrow the scope of sustainability research to a degree, but it is still a formidably broad theme. No single research project can address all of the thematic focus areas relevant for understanding regional built infrastructure sustainability. Individual research projects, can, however, investigate one or more of these thematic areas in detail and thereby take us one step further in solving the sustainability puzzle. That is our aim in establishing this collaboration with the Dept. of Civil and Environmental Engineering at the University of Washington (USA). The collaboration we are proposing focuses on regional climate change and built infrastructure sustainability in a high-latitude maritime continental climate regime. The novelty of this collaboration is that we are establishing ties with a prestigious university located in a region that is climatologically, geographically and socio-economically similar to Norway. The university is located in a city, Seattle, with a demonstrated and leading edge commitment to sustainability. We are collaborating with leading professors who ar e acknowledged experts in key fields that are complementary to the participants at the Dept. of Civil and Transport Engineering at NTNU in looking at urban and regional scale climate change impacts. In this collaboration we will not be focusing on climate change research per se, but on the application of climate change research results to built infrastructure engineering. Our collaboration aims at bridging the gap between the results from the basic science investigations and information that is useful for making real life decisions about built infrastructure.