The purpose of this study is to understand the common diseases of road and bridge engineering and put forward the corresponding construction treatment technology. In this study, firstly, taking reinforced concrete bridges and roads as examples, several common diseases of road and bridge engineering are introduced. Then, the causes of these common diseases are analyzed. Finally, the control countermeasures of diseases of bridge and road are put forward. That is, the bottom plate of the

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... disease within the treatment range is outsourced with a steel plate, and the high-intensity grout is filled therein; all girder bottom diseases are repaired with acrylic mortar; for the treatment of other local diseases, the construction technology of crack sealing and grouting is adopted; and operation monitoring system is installed. The results show that these construction techniques can prevent and control the common diseases of bridge engineering to a great extent. Therefore, this study has some practical significance.