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📐Standard Plans
Standard Plans for Road, Bridge, and Municipal Construction (M 21-01)
WebWashington State Department of Transportation (WSDOT)2024 Standard Specifications
M 21-01 is the WSDOT Standard Plans publication containing pre-engineered plan sheets for typical construction items.
WSDOT uses "Standard Plans"
Local terminology: Washington calls its standard drawings "Standard Plans" — the label used throughout this page reflects that convention.
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This is a live WA DOT portal page, not a fixed document
Washington State Department of Transportation (WSDOT) maintains this as a continuously updated page rather than a dated publication, so there is no stable document to embed. Open it at the source for the current guidance and any bulletins issued since.
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