Name: Proposed Retrofit Noise Walls

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Description: Noise walls are free-standing barriers built parallel to a highway. They are usually found near public areas, such as parks, and residential areas. The walls range in height from 6 to 20 feet, but are normally 12 to 15 feet tall. They can reduce noise levels by 10 to 15 decibels, cutting the loudness of traffic noise in half. Barriers can be formed from earth berms, or constructed of wood, stucco, concrete, masonry, metal, or other materials. This feature class contains Type II noise walls, which are walls proposed for retrofit. This data has been synchronized with the LRS dated December 31, 2020. Data appended April 2022. For questions about this dataset, please contact Lindsay Taylor: lindsay.taylor@wsdot.wa.gov

Copyright Text: WSDOT ESO - Air Quality, Acoustics and Energy Program

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