OwnerThe Washington State Department of Ecology - view all
Update frequencyunknown
Last updated10 months ago
Overview018BiotaDOTDataDepartmentEnvrnmntOpenRdwy InfrStateTRNTransportationWAWSDOTWashington
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 I and Type II noise walls that have been constructed. This data has been synchronized with the LRS dated December 31, 2018. Data appended April 2022
Additional Information
KeyValue
dcat_issued2017-12-27T21:28:48.000Z
dcat_modified2022-10-05T19:04:56.000Z
dcat_publisher_nameWSDOT Environmental Services Office
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language
harvest_object_id6d3e1d2f-98ec-40c5-84ad-8277c60885e5
harvest_source_id03016d16-b963-4f6a-99b0-8a37574f4576
harvest_source_titleWashington Geospatial Open Data Portal