Construction of the Support Roads in Puxi Section,the Shanghai World Expo site Started on May 31. The construction project involves seven roads -- Dapu Road, Longhua Road E, Binjiang Road, Guihua Road, Ruijin Road S, Mengzi Road and Zhizaoju Road -- all in Luwan District. New environmental-protection materials and technologies will be used to build the roads, while power lines along the roads will be buried underground during the construction. All the construction will be finished by the end of 2009.