ABSTRACT
In Thailand, underground infrastructure construction was started in eighteenth century; however, there were not many underground structures during those periods because of higher construction cost and misconception of the risk and safety of underground space construction. In late nineteenth century, the country had started to realize that underground space development is a better option in long run as they have fewer problems with land expropriation and environmental impacts which encouraged choosing underground space in infrastructure development. The tunnels are constructed as a part of the country’s development plan to address the results of economic boom, which is the rapid need of basic services and infrastructures for growing population with more residential, commercial, and industrial developments, leaving less space for other infrastructures development.
