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
Learn about community planning, local planning and tribal planning. Get planning study guidance.
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.
166,800 electric vehicle
registrations in Washington in 2023, up from 114,600 in 2022.
87 wetland compensation sites
actively monitored on 918 acres in 2023.
25,000 safe animal crossings
in the Snoqualmie Pass East Project area since 2014.