As Portland's population grows, bringing more cars, more traffic, and more greenhouse gas emissions, what’s the future of the biggest interstate that cuts through the heart of the city? This summer, we're having a series of conversations about Interstate 5. We'll hear from policy-makers, activists, and community members. On this installment, we hear from Mike Alexander, a board member for the nonprofit Albina Vision Trust and former president and CEO of the Urban League of Portland.