It starts just after the Jinzhonglu exit on the Jingjintang Expressway and the Tianjin outer ring road, and heads northeast, gradually heading north, eventually crossing the Jingshen Expressway at Jinwei (Baodi North).

After this, it heads directly north toward Ji County, crossing China National Highway 102, before coming to an end at Bangxi Highway, near Ji County.

The northern end is close to portions of the Great Wall of China.

The Jinji Expressway therefore forms another (somewhat indirect) passageway from Beijing to Tianjin.

The expressway has remarkably few exits and just one service area.