Maintenance Manual
The Maintenance Manual provides maintenance personnel with procedures and guidelines for maintaining the highway system in Washington State. It focuses on equipment, materials, facilities, techniques, and other information to carry out maintenance activities of the department. This manual does not establish absolute standards but provides uniform operating procedures and performance guidelines.
Individual Chapters
Chapter 1 Emergency Procedures (PDF 107KB)
Chapter 2 Work Zone Traffic Control and Safety (PDF 334KB)
Chapter 3 Pavement Patching & Repair (PDF 452KB)
Chapter 4 Drainage (PDF 181KB)
Chapter 5 Maintenance of Structures (PDF 268KB)
Chapter 6 Roadside Management (PDF 1.6MB)
Chapter 7 Snow and Ice Control (PDF 276KB)
Chapter 8 Traffic Services (PDF 285KB)
Chapter 9 Electrical System Maintenance (PDF 172KB)
Chapter 10 Miscellaneous (PDF 252KB)
Slow down – lives are on the line.
Drive the posted speeds, they’re there for your safety.
Phone down, eyes up.
Pay attention – both to workers directing you and to surrounding traffic.
Stay calm
Expect delays, leave early or take an alternate route if possible; no appointment is worth risking someone’s life.