There is no relevant regulation on the specific distance between the viaduct and the building, but there are clear regulations on preventing the influence of noise.

Reference: The Law of People's Republic of China (PRC) on the Prevention and Control of Environmental Noise Pollution stipulates that if the construction of elevated and light rail roads in expressway and cities passing through areas where existing noise-sensitive buildings are concentrated may cause environmental noise pollution, other effective measures should be set up or taken to control environmental noise pollution.