Novel combined type traffic tunnel

The utility model relates to a highway tunnel structure, in particular to a combined type traffic tunnel capable of reducing tunnel building project amount and improving the utilization ratio of adjacent spaces on the periphery of the tunnel. The combined type traffic tunnel comprises a space built by downwards excavating from the shallow ground, wherein retaining walls for reinforcing the built space are arranged on the two sides; a tunnel outer wall is cast between the retaining walls, and encloses to form a tunnel space; an interlayer space is arranged above a tunnel top plate, or an interlayer plate for dividing the tunnel space into an upper tunnel layer and a lower tunnel layer is arranged on a tunnel wall body of the tunnel space. According to the highway tunnel structure, on one hand, the utilization ratio of each built structure and space during a tunnel building process is improved, on the other hand, the possible potential safety hazards existing in existing sealed structures and backfill stratums