Sanzhi Sanbanqiao Introduction
Sanban Bridge, located upstream of the Datu River in the Sanzhi District of New Taipei City, spans the Datu River and is constructed of stone slabs divided into three sections. It is hidden beneath the new "Sande Bridge" and measures approximately 18 meters in length and 1.3 meters in width. In the Qing Dynasty, it served as a vital route for residents of Jinshan, Shimen, and Sanzhi Mountain area traveling to Tamsui. Due to the advancement in transportation, the New Taipei City Government built a new bridge, "Sande Bridge," in 1933 to facilitate vehicular passage. According to the "Construction Record of Sande Bridge" beside it, the bridge body is constructed in three sections with stone slabs, hence the name "Sanban Bridge." The bridge deck can be divided into seven sections, with four sections spanning the valley made up of three slabs arranged in order, the longest of which is about 400 centimeters. The three bridge deck sections above the piers are laid transversely. The bridge's head pillars, originally part of a wooden bridge, were damaged multiple times due to floods, prompting reconstruction into a stone bridge during the 14th year of the Tongzhi reign, as evidenced by inscriptions on the head pillars. There are three piers, constructed using stacked long stones supported by large stones, with the cross-section of the long stones measuring approximately 20x25 centimeters, marking the entrance of the ancient Datu River trail in Beixinzhuang.
