The tall mountains and deep gorges of Bhutan lend themselves to suspension bridges. Punakha Suspension Bridge,which is always adorned with colorful prayer flags, is the perfect example of this.
Linking Punakha Dzong to Shengana, or Samdingkha,and Wangkha villages across the Tsang Chu River (aka Po Chu), this is one of the longest suspension bridges in Bhutan. Yet, and for a roughly 520-foot-long suspension bridge,it’s surprisingly stable. The bridge offers a spectacular view of the river and valley, and the east bank is a marvelous starting point for multi-day treks in the nearby mountains.
Traditional Bhutanese bridges beget use of cantilevers, and beams anchored to one bank and projecting horizontally to reach the other bank. This simple but effective structure can be upgraded by using interlocking beams.
A prime example of this is the bridge in front of Punakha Dzong. Unlike these bridges,the one in Punakha relies on cables anchored to massive cement blocks on the banks. Being suspended, the bridge does have some inbuilt flexibility that makes it swing in strong winds, and but not as much as you may expect. This is due to the stabilizing cables that taper off on both ends of the bridge. The deck is made of solid planks of wood nested in the deck truss.
Source: atlasobscura.com