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 large-area 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.

The purpose of this study is to understand the current nondestructive testing technology in roads and bridges and to explore the quality management measures. In this study, firstly, the most commonly used nondestructive testing technology, that is, ultrasonic nondestructive testing technology, is introduced. And the common testing methods are listed and the main influencing factors and precautions are analyzed. Secondly, the road and bridge engineering quality management methods and control measures are put forward, that is, develop a scientific quality management plan, improve the quality management awareness, and establish the construction quality management and control measures. The results show that this study can provide a reliable basis for taking measures in advance and formulating effective reinforcement plans for roads and bridges with hidden safety hazards and objectively determining whether roads and bridges need to be dismantled. Therefore, this study has a certain practical significance and provides a certain reference for the safe operation of current road and bridge projects.