[Purposes] This work aims to determine the noise reduction measures that match the noise environment of typical urban elevated roads by the numerical simulation method. [Methods] Based on real project of the rehabilitated Baogong Road on urban viaduct of Hefei City, three typical sound environment models for urban viaduct roads were built using SoundPLAN software, including the rehabilitated urban viaduct, existing city architectures, and noise?reduction measures. The noise?reduction effects under different noise?reduction measures were analyzed, and noise?reduction measures under typical acoustic environment conditions were recommended according to the noise limits. [Findings] In the 4a?class sound environment functional area, low?noise pavement was enough to meet the environmental noise limit requirements. For the 2?class sound environment functional area, a combination of low?noise pavement and vertical sound barrier must be utilized. Traffic control measures such as truck ban should be utilized if necessary. For the 1?class sound environment functional area, the low?noise pavement and fully enclosed sound barrier should be given priority when conditions permit. With the increase of the noise limit requirement of the environment, the noise?reduction measures needed for the road on urban viaduct would be strict and the construction cost would be high. [Conclusions] Different noise environments on the road on the urban viaduct demanded different matching noise?reduction measures. These findings could provide a guide for the design and selection of noise?reduction measures for the road on the urban viaduct.