Tangible economic benefits are estimated at NT $ 81,800 million by 1990. The rate of investment return is figured at 22.3 per cent annually. The freeway will relieve heavy traffic conditions and also expand domestic markets and increase economic activities.
而且此一公路完成之後，至民國七十九年為止，有形的效益累計為新台幣八百一十八億元，投資報酬率則可達到百分之二十二點三；不僅解除當前交通擁擠的情況，改變土地利用的形態，並且還可以擴大國內的市場，增加國民的經濟活動。