Abstract:Taking the general trend of urban digital transformation and combined with the demand of bridge management and maintenance, the technology structure of perceptual service system of bridge operation and maintenance is discussed. Its multi-level significance to the city operation and serving the society and the country is explained. Some technology development suggestions are proposed from the aspects of online perception, intelligent patrol inspection and platform service. On this basis, the key issues are discussed on the digital transformation in the construction, management and maintenance of roads and bridges. And some suggestions are proposed.