According to the requirements of the "100 Stations without Hindrance", our company undertakes the design task of 10 toll plaza extension projects, including Huaxian station of Daqing-Guangzhou expressway and Huojia station of Heze-Baoji expressway. The project adopts different widening methods to expand the toll plaza reasonably from civil engineering, mechanical and electrical engineering, housing construction and other specialties, with a total investment of 150 million CNY. While solving congestion, improve the service image and service level of expressway, ensure the operation service quality, and promote the local economic development.