Engineering & standards
Design topics
Find resources to support practical decision-making during pre-design, scoping and design for your projects.
All manuals & standards
Find manuals, standards, specifications and details covering requirements for projects.
Planning guidance
Use these resources to align your plan or study with WSDOT standards and best practices.
Project management & training
Find tools that provide the framework for project managers to deliver projects on time, within scope and budget. Find available trainings covering various topics.
Environmental guidance
Resources for environmental and transportation professionals, organized by discipline.
Construction
Find information on construction materials and construction guidance.
Transportation System Management and Operations - TSMO
Learn about Transportation Systems Management and Operations (TSMO) and how it is changing how we manage transportation infrastructure.
Slow down – lives are on the line.
Excessive speed was a top cause of work zone collisions in 2024.
Phone down, eyes up.
Work zones need our undivided attention.
It's in EVERYONE’S best interest.
96% of people hurt in work zones are drivers, their passengers or passing pedestrians, not just our road crews.