设计人员观点:21世纪是生态文明时代,更是实施可持续发展的时代。在这个时代进程中所进行的西部大开发对于桥梁工程既是机遇,也是挑战,只有修建生态桥梁才能使桥梁工程走上可持续发展的道路。 Designers point of view: The 21st century is the era of ecological civilization, but also the era of sustainable development. The development of the western region in the process of this era is not only an opportunity but also a challenge for bridge engineering. Only by building an ecological bridge can bridge engineering be put on a path of sustainable development.