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.
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.