《徐霞客游记·黔游日记六》
崇祯四年，现在的朱布政使当时任提刑按察使，命令安普的游击将军李芳先用大铁链系在两边山崖上，铁链有几十条，铺木板两层，板厚仅八寸，宽八尺多。远望去，桥身飘荡深远，但踩在桥上却岿然不动，每日过往的牛马千百群，都是载着重物往前赶路的。
以大铁链维两崖，链数十条，铺板两重，其厚仅八寸，阔八尺余，望之飘渺，然践之则屹然不动，日过牛马千百群，皆负重而趋者。
In the fourth year of Chongzhen, the current Zhu Buzhengshi, who was serving as Ti Xing An Cha Shi at that time, ordered Li Fangxian, the guerrilla general of Anpu, to use large iron chains to tie the two cliffs on both sides. There were dozens of iron chains, and two layers of wooden planks were laid. The planks were only eight inches thick and more than eight feet wide. From a distance, the bridge body looks ethereal and deep, but it is unshakable when you step on the bridge. Every day, thousands of cattle and horses pass by, all carrying heavy loads and moving forward.