Bazi Bridge is located at the eastern end of the straight street of Bazi Bridge in the urban area. Built before Jiatai in the Southern Song Dynasty, Baoyou was rebuilt in four years (1256). The inscription on the fifth stone pillar under the main hole bridge reads: "Shibao has Bingchen, built on an auspicious day in winter". It is the oldest existing bridge in China. The main bridge is a single-span Liang Shi bridge, the east end of which descends along the north-south direction and the west end descends along the river bank to the southwest direction. Song Jiatai's "Hui Ji Zhi" says: "The two bridges are relatively inclined, like eight characters, hence the name." The bridge is 5m high, with a clear span of 4.5m and a clear width of 3.2m.. Located at the intersection of three streets and three rivers, this bridge has a special structure. Experts call it "the ancient overpass".
The Third Bridge is also called the Triangle Bridge. It is located on the T-shaped River in Qifu Village, Potang Township, Shaoxing County. The bridge spans three rivers at the same time, and it is a special beam bridge with one bridge instead of three. The net spans are 4m, 2.5m and 2× 3m, respectively, and three juxtaposed slab bridges are adopted.
Yulong Bridge is a multi-span Liang Shi Bridge, located in Paogu Yangjiang, Shaoxing County. The bridge consists of five-hole Tianyou Bridge (4.30m, 5.25m, 7.75m, 6.40m, 5. 12m) and three-hole Yulong Bridge (4.80m, 5.40m, 5. 15m). Tianyou Bridge is 28.2 meters long, connecting the river bank and the east bank. Yulong bridge is 5.35 meters long, connecting the river bank and the west bank. The two bridges are connected by a short four-hole Liang Shi bridge. The total length is 99.29 meters, the width is 2.20 meters, and the pier of the main bridge is 0.80 meters wide.
These three bridges belong to Liang Shi Bridge. They were all built in ancient times and have a history of thousands of years. The beam bridge represents the rapid development of China's bridge industry. Now China has been able to build all kinds of bridges by itself, and I am proud of the development of my motherland.