Ziqiang Tunnel

Self-strengthening tunnel, long like forever

There is a special sidewalk in the direction of the Forbidden City. There is no direction in the urban area.

Old tunnels; lanes, new sorting, which means fewer lanes

Also known as North No. 1 Tunnel, or North One Tunnel for short, is located on the Forbidden City section of Taipei City, Taiwan. It is a highway tunnel connecting Shilin District and Zhongshan District. The project was included in the first four-year project construction plan of Taipei City. It was planned and designed by the development office of the specific district of Neihu in Taipei City at that time, and the construction was mainly carried out by the Rongmin Engineering Department. Construction began in 57 of the Republic of China (1968) and was completed in 61 of the Republic of China (1972). Because the Dongdong project is more difficult, the Xidong project is completed first, so it will open to traffic before June 5. The Dongdong project was completed at the end of August and was officially opened to traffic on August 31. The total length is 821 meters in Dongdong (Bei'an Road to Forbidden City Road), 819 meters in West Cave (Forbidden City to Bei'an Road), 9 meters wide. At the time it was the longest road tunnel in Taiwan, and it is currently the longest road tunnel in Taipei.