山东济南黄岗路黄河隧道今天贯通 通车后5分钟可穿越黄河

Core Points - The Jinan Huanggang Road Yellow River Tunnel has been completed, allowing vehicles to cross the Yellow River in just 5 minutes [1] - The tunnel is approximately 5.75 kilometers long, with a shield section of about 3.3 kilometers, designed for a speed of 60 km/h and features a single-hole double-layer, bi-directional six-lane design, making it the world's largest diameter underwater shield tunnel [3] - The tunnel utilizes the "Shanhe" shield machine with a diameter of 17.5 meters, successfully tunneling beneath sensitive areas such as the Yellow River embankment [3] Economic Impact - The Jinan Huanggang Road Yellow River Tunnel is the first single-hole double-layer shield tunnel crossing the Yellow River, which saves underground space and investment [3] - With a net height of 4.2 meters, the tunnel meets the requirements for public transport, fire, management, and rescue vehicles, significantly enhancing traffic capacity [3] - The tunnel is expected to be operational by the second half of next year, reducing travel time across the river from approximately 30 minutes to about 5 minutes, thereby promoting economic exchange and cooperation between the north and south banks of the Yellow River [3]