In accordance with an assessment made by China Engineering Consultants, the Yushan National Park Administration decided that the land was unstable and liable to frequently collapse along the 50 odd kilometers of the planned cross-island route from Yuli to Tafen. The maintenance costs, they determined, were high and the economic value low.
國家公園管理處根據中華工程顧問公司評估：玉里到大分五十幾公里的新中橫公路需經過卅處地質破碎、易崩坍的不穩定路段，維持費用高昂，經濟利用價值低。