通天大道共计九十九弯，扣合天有九霄之意。大道借山势扶摇直上，如巨龙翔起，似玉带斜挂，一百八十度急弯回峦盘绕，堪称天下第一公路奇观。经此通天大道，即可直达天梯，壮观的天界气象近在眼前。

　　Heaven-linking Avenue has 99 turns symbolizing that the Heaven has nine palasce.The avenue runs upward with the posture of the mountain like the soaring of great dragon and also hangs like a jade belt with zigzg turns circling the hills.It is worth the titleewonder of highway in the world.Through Heaven-linking Avenue,one reaches directly the Tianticelestial ladder.The grand celestial-like scene came into view.