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Design Memorandums

We are continuously improving the way we do business. From time to time design memorandums are issued as interim updates to the Bridge Design Manual.

  • Active Design Memorandums supersedes the contents of the Bridge Design Manual.
  • Inactive Design Memorandums have been incorporated into the latest revision of the Bridge Design Manual. They are provided to document and clarify the evolution of the Bridge Design Manual.
  • Archived Design Memorandums - if there is an old design memorandum that is not listed on the table below and you would like a copy, please contact Stephanie Williams at 360-705-7484.

Active Design Memorandums

Number  

Date

Subject

07-2014

07/25/2014

Design Requirements for Temporary Bridges (pdf, 52kb)

06-2014

06/30/2014

Buried Structures (pdf, 94kb)

05-2014

05/06/2014

Bridge Anchor Types (pdf, 51kb)

03-2014

04/09/2014

Column Reinforcement

02-2014

03/26/2014

Deep Foundation Program

01-2014

02/19/2014

STD Plans Noise Barrier Wall Type 14 (pdf, 541kb)

14-2012

12/07/2012

STD Plans Noise Barrier Wall Type 11 (pdf, 93kb)

Inactive Design Memorandums

Number

Date

Subject

04-2014

04/09/2014

Bridge Anchor Types (pdf, 51kb)

09-2013

11/14/2013

Elastic Design In Lieu of Overstrength Forces for Capacity Protection (pdf, 33kb)

08-2013

10/17/2013

Self-Consolidating Concrete for Bridges and Structures (pdf, 78kb)

07-2013

09/22/2013

Requirements for Partially Filled Steel Piles and Shafts (pdf, 136kb)

06-2013

08/07/2013

Intermediate Diaphragms for Prestressed Concrete Girder Bridges (pdf, 36kb)

05-2013

07/01/2013

Bridges With MSE Wall Supported Abutments (pdf, 192kb)

03-2013

03/01/2013

Abutment Participation as Part of Earthquake Resisting System (pdf, 179kb)

02-2013

02/08/2013

Placement of Post-tensioning Tendon and Anchorage Placement (pdf, 46kb)

01-2013

01/17/2013

Lateral Confinement for Oversized Shafts for SDCs C and D (pdf, 90kb)

13-2012

10/07/2012

Structural Design Recommendations of CFT and RCFT for Bridge Foundation (pdf, 409kb)

12-2012

09/19/2012

Slab Shrinkage (pdf, 20kb)

11-2012

09/14/2012

Disk Bearings (pdf, 22kb)

10-2012

08/15/2012

Extension of Column Reinforcing Into Crossbeams (pdf, 310kb)

09-2012

07/31/2012

Seismic Design of Underground Structures (pdf, 104kb)

08-2012

07/04/2012

Extended Strands Continuity Design Criteria (pdf, 101kb)

02-2012

02/06/2012

Guide Specifications for LRFD Seismic Bridge Design,
2nd Edition 2011
(pdf, 248kb)

08-2011

12/09/2011

Moment Slab (pdf, 93kb)

05-2011

10/07/2011

SEW Bridge Abutment Configuration (pdf, 192kb)

04-2011

09/07/2011

WSDOT Policy For Use Of Seismic Isolation Bearings (pdf, 33kb)

02-2011

07/20/2011

New LRFD Chapter 15 - Design Of Sound Barriers (pdf, 163kb)

01-2011

04/19/2011

Fatigue Design Categories For Pole Structures (pdf, 74kb)

01-2010

01/08/2010

Wall Type Design Specifications and Stamping Policy (pdf, 48kb)