Abstract: The causes of the rutting, cracks and other diseases of intersection asphalt overlays are summarized and analyzed according to the S120maintenance engineering practiee. Meanwhile the mechanical characteristics of the intersection of pavement structure were analyzed regarding  the operating characteristics of intersections. The maximum shear stress area and antirutting area of asphalt overlays were identified on the old cement concrete pavement，which provides the basis for the antirutting, cracking design of intersection pavement structures and materials. Based on the results of the mechanical calculation, several suggestions on the combination of pavement structures and selection of materials for urban road intersections are provided.

Key words: asphalt pavements; intersection; rutting; mechanical analysis; pavement structure