There are no plans yet to start construction in
Huachi County (Shaanxi border-Huan County). Construction is in progress between
Huan County urban area and the border with Ningxia. This section will be a 2x2 lane
limited-access road.[4]
Ningxia
Construction has started. The route enters Ningxia at Zhaike township, through Sanhe (Heicheng) town, where it crosses
G344. The total length in Ningxia is 55 km (34 mi).[5][6]
Gansu (western section)
Construction of the 61 km section between
Baiyin and
Lanzhou New Area started in 2017 and was completed in 2021.[7][8]
Qinghai
Construction has started from Jiading at the border with Gansu to the terminus in Haiyan.[9][10] Completed within
Huzhu County.
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). This observation was eventually dropped in new National Highway plans, replaced by Dandong-Dongxing Highway.
A extension plan of the highway system was announced in 2013, including extension of existing highways(101-112, 201-227, 301-330) and new highways (North-South 228-248, East-West 331-361, Connections 501-581). Only small portions of them needs to be constructed from scratch; most of the new highways would be upgraded provincial/county highways.
Another extension plan was announced in 2022, including new small purpose connection highways (601-701).