Since the freeway extends from the north to the south through the whole western corridor of the island, one district differs remarkably from the others in weather, topography, environment and geology.
需要性能優越的機械與人定勝天的意志。高速公路全線陸橋、水橋共有三四九座，累計長度比台灣地區全部橋樑的總和還多。