USDOT provides TIFIA loan of USD874.6 million for Maryland Purple Line; construction to begin in 2016 June 16, 2016 | North America Finance The United States Department of Transportation (USDOT) has awarded a Transportation Infrastructure Finance and Innovation Act (TIFIA) loan of USD874.6 million for the Purple Line light rail project in... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password