The construction of the highway on Tianlong Mountain 天龙山 in Taiyuan, N China’s Shanxi Province started in March 2019 after the old road built in 1996 suffered wear and tear. The new highway is about 30 kilometers long with a vertical gain of 350 meters. The entire highway reconstruction project also includes four bridges and a tunnel. It reduced the grade from 15% to 4%, which has greatly improved safety. The project completed in September 2019.