en.Wedoany.com Reported - On June 28, 2026, the Malutang Grand Bridge on the Tianma Expressway, constructed by CCCC Second Harbor Engineering Co., Ltd. (referred to as "CCCC Second Harbor Engineering"), was successfully closed. The completion of this key milestone marks the full opening of the Tianma Expressway, adding another major artery connecting the China-Vietnam border.

Located in Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan Province, the Tianma Expressway starts from the Tianbao Port border gate on the China-Vietnam border and ends at the northern interchange of Malipo County, with a total length of 52.831 kilometers and a bridge-tunnel ratio of 80.4%. This project is a critical transportation infrastructure project in the China-Vietnam border region.

As a key control project of the entire line, the Malutang Grand Bridge spans the Malutang Reservoir, with a total length of 1,005.5 meters and a main span of 480 meters. It is a semi-floating system steel-concrete composite girder cable-stayed bridge with double towers and double cable planes. The south tower is 247 meters high, and the north tower is 254 meters high, equivalent to an 80-story building, standing on a steep canyon with a slope of nearly 75 degrees. It is currently the bridge with the largest span, the highest tower, and the most complex construction environment in Wenshan Prefecture.

CCCC Second Harbor Engineering Co., Ltd., established in 1950 and headquartered in Wuhan City, Hubei Province, is a core subsidiary of China Communications Construction Company (CCCC) and one of China's leading infrastructure construction enterprises in bridges, ports, and highways.

The closure of the Malutang Grand Bridge is an important milestone in the construction of the Tianma Expressway. Once fully opened, the Tianma Expressway will significantly improve transportation conditions in the China-Vietnam border region, promote border trade and regional economic and social development, and hold great significance for deepening infrastructure connectivity between China and Vietnam.

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