Recently, a key transportation construction project in Taizhou—the S325 double-track Huangyan Ma'anshan to Houyang section—officially opened to traffic. The project is about 4.6 kilometers long, with a total investment of 870 million yuan.

The project crosses the Yongning River three times. Among them, the Yongning River No. 2 Grand Bridge is the first swallow-style arch bridge in Huangyan District. It not only offers advantages such as a long span, high load-bearing capacity, and strong adaptability, but also has an elegant shape; from a distance it looks like two swallows spanning the river, becoming a beautiful scenic landmark on both banks of the Yongning River.