19 19 Reconstruction of Tanlei River Bridge. After the earthquake, the bridge tilted, endangering the safety of passers-by 1920, 1933, 1934, rebuilt many times. 1984 demolish the old one and build a new one, which is a horizontal cantilever arch bridge with wooden structure. The bridge has a total length of 40m, a span of 27.4m, a height of 15.4m and a width of 4.5m It has 13 rooms and 64 columns. There are three stepped passages on the bridge deck, which are wide and narrow in the middle, with wooden railings on both sides, and the bridge corridor is covered with a blue tile roof. Each row of bridges is tied into eleven groups with ten thick logs, which are gradually hoisted from the piers on both sides of Qingyuan River to support the bridge to leap over Qingyuan River. There are verandahs at both ends of the bridge, with upturned corners and cornices on the roof. Sun Ke's inscription "Wei Shui Changhong" is embedded in the main wall of the south bank cloister. There were many plaques inscribed by famous writers, but unfortunately they were all destroyed in the long river of years. At present, there are two plaques hanging in the Nan 'an Corridor, namely "Baling Bridge" inscribed by Pei Jianzhun, a calligrapher in modern Gansu Province, and "Journey to the Avenue" inscribed by Yu Youren, a modern educator. This kind of wooden classical bridge is rare in China and has high architectural and artistic appreciation value. Now it is a state-level cultural relics protection unit.