The paper expounded the extension and connotation of sustainable development conception of expressway extension project. In allusion to the stratagem objective of sustainable development, the objective system of sustainable development was constructed and expressway extension project was studied as programme system. The paper constructed the life-cycle integrated management system of expressway extension project. Around the three-dimensional coordinate system of integrated management the meaning of expressway extension project life-cycle was explained. The programme characteristics were analyzed and an incorporate organizational structure of "extension—operation—traffic management"  was built. The paper built information structure matrix and information management system of expressway extension project life-cycle and used weatherglass to build an evaluation model of sustainable development. At last, the inspirer was summarized which the research on expressway extension project construction management based on the theory of sustainable development can offer to the construction of engineering after and the development of industry.