G1012 Jiansanjiang–Heixiazi Island Expressway

The Jiansanjiang–Heixiazi Island Expressway, commonly referred to as the Jianhei Expressway and designated G10 12 , is an expressway linking the town of Jiansanjiang with Hexiazi Island, entirely in the prefectural-level city of Jiamusi in the Chinese province of Heilongjiang. It is 217 km in length and opened on 13 August 2017. Prior to the national-level G designation, the highway was designated S14 by the province.

In its western end, the expressway connects with the G11 15 Jixi–Jiansanjiang Expressway, which continues some 22 km north to an interchange with the national-level G10 11 Harbin–Tongjiang Expressway. This section could be considered as part of G10 12, but is not signed as such.

In its eastern end, the expressway ends just before a bridge to Hexiazi Island, at a junction with County Road 109 in Fuyuan. The bridge will eventually connect a new trans-national road crossing over the Amur River to the Jewish Autonomous Oblast and nearby city of Khabarovsk, in Russia.