G1816 Wuhai–Maqên Expressway
The Wuhai–Maqên Expressway, designated G1816, is an expressway in China's Inner Mongolia, Ningxia and Gansu provinces.
It is complete between Shizuishan and Wuzhong in Ningxia and between Guanghe County and Hezuo in Gansu. Between Lanzhou Zhongchuan Airport and Guanghe, and around Yinchuan, the expressway is concurrent with other expressways.
It has been designated as a National Trunk Highway since 2013, but parts of the road were already built as provincial expressways at the time.