Preserving our roads & bridges

Learn how we maintain our state's highway system to keep people safe and goods moving 24-hours-a-day, 365-days-a-year.

We oversee the day-to-day needs of maintaining our state's highway system, including:

  • 20,679 highway lane miles (includes ramps, collectors and special use lanes).
  • More than 3,000 bridges.
  • 1,100 traffic signal systems.
  • 10 major mountain passes kept open all year.
  • Close to 50 safety rest areas.

Bridge & structure preservation

Learn how we preserve, inspect and rate the condition of Washington state bridges.

Chip seal

Learn about chip seals (or seal coating, BST, Bituminous Surface Treatment), the application of a special protective wearing surface to an existing pavement.

Work with us at WSDOT

Enjoy paid time off. 

Our employees earn paid vacation and sick leave every month, as well as 12 paid holidays per year.

Work in a modern environment.

We offer telework options, an infant at work program, flexible work schedules and more.

Continue your learning journey.

Get tuition reimbursement for coursework or trainings related to your job or career ladder.