Future Infrastructures: The Over and Under of I-81, addresses a problem faced by many cities across the globe; highways erected in the nineteen fifties and sixties that cut through urban centers in the name of “urban renewal,” economic development, efficiency. Though much was expected from new infrastructure, the results of ill-conceived planning efforts had long-term effects on both the form, economy, and social and political fabric of cities and affected diverse populations unequally. Many urban highways of the era created geographic, social, and cultural division. Their contemporary value is contested. Like many American cities laced with rotting highway infrastructure, Syracuse, NY, is debating its infrastructural future. Alternatives include rebuilding crumbling roadways, re-routing highways, and tunneling below grade. Speakers address the issue from both an urban design and policy perspective and provide examples of how cities have transformed highway infrastructure to create recreational space and connectivity. At stake in demolition and rebuilding or repair, is urban continuity, social reconstruction, land ownership and development rights, and economic benefit.