To provide a road structure capable of preventing local damage by noises and an exhaust gas of the living environment of the peripheral area of a road by sound-insulating noises emitted from an automobile traveling on the road while upwards diffusing the exhaust gas.

The road structure is composed of the road (1), a wind tunnel body (2) being installed on the road (1) and having opening sections (20, 21) at both end sections and a guide body (3) mounted on the front side in the traveling direction of the automobile in the wind tunnel body (2) at a fixed distance. A fixed number of outlets of air (27) are formed to side wall sections on both sides of the wind tunnel body (2), and a flue (28) is secured at the top section of the roof section of an intermediate section. The guide body (3) has a guide section (30) upwards inclined to the traveling-direction side of the automobile and a passage port section (31) in which the automobile is passed.