As of 2021[update] the route is still partially under construction[1] and scheduled to be completed in 2022.

[2] The route will traverse the Hindutash through a tunnel.

[3] China National Highway 112 runs around Beijing Before 2013, Mainland China observed National Highway 228 as Taiwan Ring, composed of several National Expressway (Republic of China) and Taiwan provincial highways, this designation is not recognized by Republic of China (Taiwan).

Another extension plan was announced in 2022, including new small purpose connection highways (601-701).

This People's Republic of China road-related article is a stub.