Core Viewpoint - On December 26, eight highway projects were completed and opened to traffic in Shandong Province, increasing the total highway mileage to 9,240 kilometers, with over 300 kilometers added in this round of construction [2][5]. Group 1: Highway Projects Overview - The completed projects include the Jinan to Weishan Highway, Yuncheng to Juancheng Highway, Dong'a to Yanggu Highway, and several others, contributing to the expansion of the provincial highway network [2][5]. - The Shanhaiguan Highway's two cities to Fen Shui section was expanded, and the Jinan to Jining New Airport section of the Jinan to Weishan Highway was also opened [2][3]. Group 2: Project Details - The Shanhaiguan Highway two cities to Fen Shui expansion project is part of the national highway network, with a length of 61.657 kilometers and designed for a speed of 120 km/h [3]. - The Jinan to Weishan New Airport section is 88.6 kilometers long, with a total investment of 13.71 billion yuan, connecting key cities and enhancing transportation efficiency in the region [3][4]. Group 3: Economic and Regional Impact - The new highways are expected to improve regional collaboration and support ecological protection and high-quality development strategies in the Yellow River basin [5]. - The projects will facilitate efficient resource circulation and strengthen the connection between the southwestern Shandong region and the Central Plains economic zone [5].