On August 25, the Jinan Huanggang Road Yellow River Tunnel, invested and built by the Jinan Urban Construction Group and constructed by the 14th Bureau of China Railway, was completed and opened to traffic, marking the official commissioning of the largest diameter underwater shield tunnel in China. The total length of the Huanghe Tunnel on Huanggang Road in Jinan is about 5.75 kilometers, of which the shield section is about 3.3 kilometers long. It was constructed using a “Shanhe” shield machine with an excavation diameter of 17.5 meters. The tunnel has a single-hole, double-layer structure. The upper and lower floors are equipped with a total of six lanes, and the design speed is 60 kilometers per hour. It is the first double-layer shield tunnel in China to pass through the Yellow Single Hole.

On August 25, the Jinan Huanggang Road Yellow River Tunnel, invested and built by the Jinan Urban Construction Group and constructed by the 14th Bureau of China Railway, was completed and opened to traffic, marking the official commissioning of the largest diameter underwater shield tunnel in China. The total length of the Huanghe Tunnel on Huanggang Road in Jinan is about 5.75 kilometers, of which the shield section is about 3.3 kilometers long. It was constructed using a “Shanhe” shield machine with an excavation diameter of 17.5 meters. The tunnel has a single-hole, double-layer structure. The upper and lower floors are equipped with a total of six lanes, and the design speed is 60 kilometers per hour. It is the first double-layer shield tunnel in China to pass through the Yellow Single Hole.