A proposed new half-billion-dollar terminal at Des Moines International Airport has been named one of North America's top 100 infrastructure projects by Washington, D.C.-based consulting firm CG/LA Infrastructure, reports DesMoinesRegister.com. As result, the list, the Des Moines Airport Authority board has been invited to present the project to more than 500 executives and investors at an infrastructure forum in Washington, D.C., in October.