Construction Manual
Publication URL
Publication Number
M 41-01
Publication Version
M 41-01.46
Manual Manager
Heidi Jensen; 360-705-7908
Originator
State Construction Office, Multimodal Development & Delivery (M2D2)
This manual provides department construction engineering personnel instruction for fulfilling the objectives, procedures, and methods for construction administration of Washington State transportation projects. The Construction Manual is intended as a reference book.
The Construction Manual can be downloaded in PDF format and printed without charge.
Individual Chapters
Foreword (PDF 168KB)
Contents (PDF 220KB)
Chapter 1 Administration (PDF 1.3MB)
Chapter 2 Earthwork (PDF 3.7MB)
Chapter 3 Production From Quarry and Pit Sites and Stockpiling (PDF 3.1MB)
Chapter 4 Bases (PDF 365KB)
Chapter 5 Surface Treatments and Pavements (PDF 553KB)
Chapter 6 Structures (PDF 4.4MB)
Chapter 7 Drainage Structures, Sewers, and Conduits (PDF 3.2MB)
Chapter 8 Miscellaneous Construction (PDF 2.7KB)
Chapter 9 Materials (PDF 1.7KB)
Chapter 10 Documentation (PDF 1.2KB)
Chapter 11 Forms (PDF 345KB)
Revision History
M 41-01.46
M 41-01.45
M 41-01.44
M 41-01.43
M 41-01.42
M 41-01.41
M 41-01.40
M 41-01.39
M 41-01.38
M 41-01.37
M 41-01.36
M 41-01.35
M 41-01.34
M 41-01.33
M 41-01.32
M 41-01.31
M 41-01.30
M 41-01.29
M 41-01.28
M 41-01.27
M 41-01.26
M 41-01.25
M 41-01.24
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.