The level of major transporting infrastructure of one culture often reflects its level of civilisation. In the past, the focused of transportation network concentrated mostly on the transporting and safety efficiency, nevertheless, demonstrated very little appreciation of the ecosystem. As the result, the development in conveyance provide a highly convenient modern life style, at the same time brought to the nature environment and landscapes unrecoverable impacts. It is often found that around the world the predominant concerns of early road constructions involved engineering and constructing challenges rather than the considerations of environmental maintenances. This has caused great ecological repayments such as the landslides, the avalanches and the debris flow disaster; consequently, it has become an urgent and vital issue, which has the priory even above economical and tourist developments. In the recent years, under the influences of the global ecologist movements, eco-engineering has become the fashion in our present public transporting infrastructures designs. However, the maturity of such vastly depend on a long term systematically scheme as well as the broad education to the general pubic. This study is based on both national and international related literature survey and the observations from the local experts with references to our internal assignment¡Xthe Green Island Coastal Highway. Its goal is to provide an alternative opinions and inspection on such project.