济南黄岗路黄河隧道有序推进，已转入内部结构、机电等施工阶段

Core Points - The Jinan Huanggang Road Yellow River Tunnel project has completed the shield tunneling phase and is now moving into the internal structure, electromechanical installation, and auxiliary facilities construction phase [1][3] - The tunnel spans approximately 5755 meters, with the tunnel section measuring about 4762 meters and the shield section at 3290 meters, designed for a dual-layer, bi-directional six-lane configuration [3] - Upon completion, the travel time across the Yellow River will be reduced from approximately 30 minutes to 5 minutes, significantly enhancing regional collaboration between the north and south banks [5] Construction Progress - The northern bank has completed the foundation pit excavation and main road construction, while progressing on the open-cut tunnel structure, G309 interchange structure, toll station, and auxiliary roads [1] - The southern bank has finished the open-cut tunnel and high wind tower structure, and is currently working on the connecting roads and auxiliary facilities [1] - The project has implemented targeted construction plans, increased manpower and equipment resources, and optimized excavation methods, achieving significant milestones such as completing 98 diaphragm walls in 39 days and the northern bank's open-cut tunnel excavation in 35 days [3]