To allow bicycles and pedestrians to easily pass while hindering the transit of motorcycles by providing a passage groove continuously changed in width and having constriction sections narrower in width than the tire of the motorcycle and expansion sections wider in width than the tire of the motorcycle.

A road surface structure 1 is provided with step sections 2, 3 hindering the transit of motorcycles, and a passage groove 4 is provided between the step sections 2, 3. The passage groove 4 is provided with constriction sections 5 and expansion sections 6 in turn, and it is continuously changed in width into a corrugated shape. The constriction sections 5 have the width W1 narrower than the tire width of the motorcycles, and the expansion sections 6 have the width W2 wider than the tire width of the motorcycles. When a motorcycle intends to enter the road surface structure 1, the step sections 2, 3 higher than the surrounding serve as obstacles to hinder the entry into the passage portions on both sides of the passage groove 4. When the motorcycle intends to pass through the passage groove 4 by avoiding the step sections 2, 3, the tires are pinched in the constriction sections 5, and its entry is hindered.