On June 20, the main girder of the Zangmu Yarlung Zangbo River double track bridge of Lalin railway, the highest railway arch bridge in the world, was successfully closed. The Yangtze River Estuary, the world's first highway rail dual-purpose cable-stayed bridge with a span of more than 1000 meters, is about to open to traffic. Under the normalization of epidemic prevention and control, bridge construction across the country has been promoted in an orderly manner. Crossing rivers, lakes and seas, connecting deep valleys and valleys, the completion of a number of bridges has greatly facilitated the production and living of residents and accelerated the regional economic and social development.