Design - 2021 Active Design Manual Revisions

The most current WSDOT Design Manual is M22-01.19 dated September 2020 and is available on the Design Manual Abstract Page: http://www.wsdot.wa.gov/Publications/Manuals/M22-01.htm

110 - Design-Build Projects

  • Updated Project Delivery Method & Exhibit 110-1

Current Status: Statewide review: DM Chapter 110 State Draft (docx 148 kb)

300 - Design Documentation & Glossary

  • Updated Project Delivery Method
  • Adding Kinds of Document Changes. Errata, Supplement, Amend, and Supersede
  • Combining Exhibits 300-3 and 300-4 into Exhibit 330-3
  • Glossary – Adding Terms

Current Status: Statewide Review: DM Chapter 300 State Draft (docx 87 kb)

610 - Investigation of Soils

  • Adding Well Decommissioning

Current Status: Statewide Review: DM Chapter 610 State Draft (docx 20 kb)

1060 - Fall Protection (New Chapter)

  • Created new Chapter 1060-Worker Fall Protection by extracting Section 730.04 from Chapter 730.
  • Updating Worker Fall Protection Selection and Rules

Current Status: Statewide Review: DM Chapter 1060 State Draft (docx 38 kb)

1010 - Work Zone Safety & Mobility

  •  Added Transportation Systems Management and Operations (TSMO)
  • Updated Transportation Management Plan (TMP)
  • Added Smart Work Zone System (SWZS)

Current Status: Statewide Review: DM Chapter 1010 State Draft (docx 48 kb)

1120 - Preservation projects

  • Updating guidance on Roadside Safey Devices
  • Updating guidance on Rumble Strips
  • Rumble Strips on BST Projects

Current Status: Statewide Review: DM Chapter 1120 State Draft (docx 37 kb)

1130 - Devolpment Services

The Development Services Manual will be retired upon publication of this DM Chapter 1130. Much of the DSM’s content informed this new chapter and forthcoming guidance documents.

The DSM was outdated. As we began to look at resourcing that, we decided to instead create a new DM chapter containing the policy and main direction.
By including this as a Design Manual chapter, it stands with other DM policy chapters such as TIAs, Access Control, Driveways, Intersections, commonly used for design and facilitation of development mitigation.
Current Status: Statewide Review: DM Chapter 1130 State Draft (docx 112 kb)

1350 - Railroad Grade Crossings

Section 1350.02 Reference updates (1 page); a rewrite of Section 1350.03(1)(a) (railroad crossing sight distance) to match RCW 47.32.140 (2 pages); and Exhibit 1350-1 is updated to match AASHTO 2018, Table 9-29 based on WB-67 (1 page).

Current Status: Statewide Review: DM Chapter 1350 State Draft (docx 252 kb)

Combined Chapters 100, 321, 1100, 1101, 1102, 1104, 1105, 1410

  • Inserting Executive Order 1090.01 – Advanced Practical Solutions
  • Inserting Transportation Systems Management and Operations (TSMO)
  • Explaining BOD Exemptions

Current Status: Statewide Review: Combined DM Chapters 100, 321, 1100, 1101, 1102, 1104, 1105, 1410 State Draft (docx 81 kb)

Combined Chapters 530, 560, 720, 1340, 1350, 1510, and 1515

  • Renaming “Protective Screening” and “Screening for highway structures” to “Bridge Fence
  • Clarifying Design Vehicle Guidance for Driveway Design
  • Writing out as many of the term “Hazard” as Possible from the Design Manual

Current Status: Statewide Review: Combined DM Chapters 530, 560, 720, 1340, 1350, 1510, 1515 State Draft (docx 2.1 mb)

Combined Chapters 950, 1020, and 1360

  • Removing lights on overhead signs
  • Fixing Striping Shown on Exhibit 1360-11a & Exhibit 1360-11b
  • Adding HQ traffic to Public Art Specialty Services Team

Current Status: Statewide Review: Combined DM Chapters 950, 1020, 1360 State Draft (docx 1 mb)

Combined Chapters 1220 & 1260

  • Zero Length Vertical Curves
  • Replacing guidance for Sag Vertical Curves
  • Removing comment about continuous illumination

Current Status: Statewide Review: Combined DM Chapters 1220, 1260 (docx 27 kb)

Associated spreadsheet for Sag Vertical Curves: Sag Vertical Curves (xlsx 28 kb) 

Combined Chapters 1600, 1610, and 740

  • Defines “Roadside Safety Device”
  • Giving choices for the Clear Zone Inventory Form
  • New Exhibit 1600-X Existing and Design Clear Zone Plan View
  • Barrier in Diverging Diamond Interchange Medians
  • Changing “Roadway Rumble Strips” to “Transverse Rumble Strips”
  • Site Constraints to Barrier Placement
  • Guidance for Barrier Near Noise Walls

Current Status: Statewide Review: Combined DM Chapters 1600, 1610, 740 State Draft (docx 258 kb)

Contact Us

John.Tevis@wsdot.wa.gov
360-705-7460
John.Donahue@wsdot.wa.gov 
360-705-7952