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📏Design Manual (M 22-01)
Bridge Design Manual LRFD (M 23-50)
WebWashington State Department of Transportation (WSDOT)2024 Standard Specifications
WSDOT's bridge-specific design manual implementing AASHTO LRFD with Washington state amendments.
Local terminology: Washington calls its design manuals "Design Manual (M 22-01)" — the label used throughout this page reflects that convention.
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