Standard Plans
Publication URL
Publication Number
M 21-01
Manual Manager
Bill Berens, 360-705-7256
Originator
Design Office, Engineering and Regional Operations Division
The manual contains standard engineering drawings used for road, bridge, and municipal construction.
Slow down – lives are on the line.
In 2023, speeding continued to be a top reason for work zone crashes.
Even one life lost is too many.
Fatal work zone crashes doubled in 2023 - Washington had 10 fatal work zone crashes on state roads.
It's in EVERYONE’S best interest.
95% of people hurt in work zones are drivers, their passengers or passing pedestrians, not just our road crews.