The invention discloses a right-hand combined bridge or a combined tunnel comprising two lane-changing type `halberd`-shaped units. The right-hand combined bridge or the combined tunnel is an unblocked combined bridge or a combined tunnel which is combined by two independent bifurcate bridges or tunnels and can prevent the interlacing occupying conflict of opposite motor vehicles in straight going or left turning in a crossroad. The side-by-side sections of a straight-going bridge and a left-turning bridge of the same ground branched lanes in a high position area turn left to form a lane changing section, and the distance between the bifurcate point and the lane changing section is the high position area; two lane-changing type equidirectional-bifurcation `halberd`-shaped bifurcate bridges form the combined bridge a way that the ground ends of straight bridges of the bifurcate bridges are adjacent to the lane changing section. The structure of the combined tunnel is identical to the structure of the combined bridge. The right-hand combined bridge or the combined tunnel has the advantages that the combined bridge or tunnel only adopts one layer, so that the interlacing and occupying problems of straight-going and left-turning vehicles on two opposite ground branched lanes in the crossroad are solved, and the traffic is enabled to be unobstructed; vehicles can directly turn left without driving redundant roads, and about 70% of traffic volume is solved.