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Standard Specifications for Road, Bridge, and Municipal Construction (M 41-10)
WebWashington State Department of Transportation (WSDOT)2024 Standard Specifications
WSDOT "Orange Book" (M 41-10) covers materials and construction methods for state highway and municipal projects in Washington. Organized in divisions 1-9.
Full Text — 146 Sections (2024 Edition)
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Previous Editions
Projects remain governed by the edition in effect when they were advertised — these earlier editions stay available for active and legacy work.
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2025 Standard Specifications (M 41-10)
2024 Standard Specifications (M 41-10)
2023 Standard Specifications (M 41-10)
2022 Standard Specifications (M 41-10)
2021 Standard Specifications (M 41-10)
2020 Standard Specifications (M 41-10)
Older editions (2000–2018)
Revision History section lists every edition back to 2000
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