The maturity model is applied to the quality evaluation of municipal road and bridge facilities management based on the characteristics of maintenance and management of municipal road and bridge facilities. Latitude from the two functions and process management to identify critical practice municipal bridge facilities maintenance and management factors, constructs the municipal road and bridge facilities maintenance management maturity model, put forward the maturity evaluation method, and applies this method to the Xinjiangwan municipal road and bridge facility management quality assessment, it is concluded that management maturity level and improve the direction, It provides reference for improving the management level of municipal road and bridge facilities.