宜涪高铁是我国"八纵八横"高铁网沿江通道的重要组成部分，线路起于在建的沿江高铁武汉至宜昌段宜昌北站，线路东起湖北省宜昌市、向西经恩施土家族 苗族自治州，重庆市石柱县、丰都县、涪陵区，接入郑渝高铁长寿北站。新建正线全长约471公里，设计时速350公里。 记者从长江沿岸铁路集团重庆有限公司获悉，12月8日，宜昌至涪陵高铁重庆段建设取得关键进展，李寺村大桥正式进入现浇梁移动模架施工阶段，标志着 宜涪高铁项目开始进入上部结构施工，为全线贯通奠定基础。 李寺村大桥全长约404米，包含桥台2个，墩身11个，桩基80根，桥梁跨度均为32米，采用双块式无砟轨道。桥梁沿途村舍密集，乡村道路纵横交错。此次采 用的移动模架重达500余吨，由主梁系统、吊挂系统、模板系统、支承与走行系统、电气及液压系统、辅助设施等构成。移动模架是一种自带模板，在桥跨 间自行移位的现浇施工设备。 责编：黄之安、王珊宁 沪渝蓉沿江高铁项目建成后，将形成川渝地区与华中地区的时速350公里高速铁路新通道，极大便利沿线人民群众出行。 （总台记者 李洪淼 张波俊） ...

Core Viewpoint - The construction industry is actively engaged in various infrastructure projects during the national holidays, showcasing dedication and responsibility among workers [1][2][3][4][5][6]. Group 1: Construction Activities - In Jiangxi, over 1,200 workers from China Railway 25th Bureau are working on the Bai Shi Qiu Bridge, which is crucial for subsequent rail laying [2]. - In Shaanxi, the construction of the Shenwa Railway is progressing with a focus on key projects like the Kuye River Bridge and the Caoduo Mountain Tunnel [2]. - In Guangxi, 415 workers are involved in the Guangxi Linning Expressway project, utilizing various heavy machinery to meet annual construction goals [3]. - In Hubei, hundreds of workers from China Railway 18th Bureau are working around the clock on the Yuefu High-speed Railway's Moon Mountain Bridge [3][4]. - In Jiangsu, the construction of the Nantong-Haitai Yangtze River Tunnel is advancing with a domestic shield machine achieving an average progress of 16 meters per day [5]. - In Guangdong, over 200 workers are tackling challenges in the Hezhang High-speed Railway project, particularly in areas with complex geological conditions [6]. Group 2: Worker Commitment - Workers express pride in contributing to significant infrastructure projects during the holidays, emphasizing the importance of their roles in improving transportation [3][4]. - Project leaders highlight the need for safety and progress, especially during holiday periods, to ensure timely completion of critical infrastructure [2][4][6].

Group 1: Railway Construction Progress - Multiple railway construction projects across various provinces are actively ongoing during the "May Day" holiday, showcasing the commitment of construction workers to maintain progress and quality [1][2][5][8] - The Tianlong Railway's Baiyangli Tunnel in Gansu is nearing completion, with a total length of approximately 6.1 kilometers, and is a key project in Gansu's "14th Five-Year" railway development plan [1] - The Binhai Dong Yellow River Bridge in Shandong, part of the Tianjin-Weifang High-Speed Railway, spans over 42 kilometers and is crucial for enhancing connectivity in the Bohai Rim region [2] - The Xiongxin High-Speed Railway in Hebei has completed over 1,700 box girder installations, achieving 70% of its total task, which will improve the high-speed rail network in the Beijing-Tianjin-Hebei area [2] Group 2: Key Infrastructure Projects - The Wuhuo Bridge on the Pingluozhou High-Speed Railway in Henan is over 33 kilometers long and presents significant construction challenges, aimed at enhancing regional transportation [5] - The Ankang Hanjiang Bridge in Shaanxi, part of the Kangyu High-Speed Railway, is notable for being the largest single-span steel-concrete arch bridge for high-speed rail in China, with over 40% of the main arch installation completed [5][6] - The Yujialiang Tunnel, a critical component of the Kangyu High-Speed Railway, has achieved over 5,000 meters of excavation, addressing complex geological challenges [6] - The Yichang-Fengjie High-Speed Railway in Hubei is progressing with the Longling Tunnel, which is over 11 kilometers long and will significantly reduce travel time between Yichang and Chongqing [6] - The Qujiang Bridge on the Qu-Li Railway in Zhejiang is a key engineering challenge, with a total length of approximately 10.59 kilometers [6] Group 3: Logistics and Infrastructure Development - The Shenzhen Pinghu South Comprehensive Logistics Hub project is advancing with over 2,000 workers on-site, expected to complete all steel structure work by the end of May, covering a total area of 1.11 million square meters [8]