G55 Erenhot–Guangzhou Expressway
The Erenhot–Guangzhou Expressway (), designated as G55 and commonly referred to as the Erguang Expressway () is an expressway that connects the cities of Erenhot, Inner Mongolia, and Guangzhou, Guangdong. When fully complete, it will be  in length. Route

Inner Mongolia
Erenhot, the northern terminus of the expressway, is a border town with Mongolia and has a border checkpoint. The expressway is under construction from Erenhot to Baiyinchagan town in Ulanqab, and complete from Baiyinchagan to the Shanxi border. Shanxi
The entire portion of the expressway in Shanxi is complete. Henan
The entire portion of the expressway in Henan is complete. Hubei
The entire portion of the expressway in Hubei is complete except for  of expressway to the Hunan border. In 2000, a cache of Warring States period artifacts was discovered in eastern Wulipu's Zuozhong village during the construction of the Xiang(yang)–Jing(zhou) Highway (). Hunan
The entire portion of the expressway in Hunan is under construction. This section has been beset by delays and cost overruns. Guangdong
The expressway is under construction from the Hunan border to mountainous Huaiji County, Zhaoqing, and complete from Huaiji County to the southern terminus, Guangzhou, capital of Guangdong province. References

Chinese national-level expressways
Expressways in Inner Mongolia
Expressways in Shanxi
Expressways in Henan
Expressways in Hubei
Expressways in Hunan
Expressways in Guangdong