In his tenure as Minister, Lien has been active in developing several key projects, including the construction of a subway in Taipei, and the planning of a network of air routes.
綜觀連戰在交通部任內的作為，如鐵路地下化工程、建立全球航空網…… 等影響深遠的措施，雖不一定是他的原創構想，卻是他任內推動實施。