Standard Specifications & Details - 2012
SD201 -  Typical Trench - August 2012 
B-55.20.00 - Pipe Zone Bedding & Backfill - Deleted August 2012

ATTENTION: New Updates March 1, 2012

The Standard Specifications and Details have been updated by the Public Works Department. This document supplements and in some cases supersedes the 2012 WSDOT / APWA Standard Specifications for Road, Bridge, and Municipal Construction. The updates are effective March 1, 2012.

If you would like to receive notification of future updates to this document, please send an email request to with your preferred email address and contact name.

The document is available:

The 2012 Table of Contents highlights the updates to the 2011 Standard Details. Each Standard Detail is coded as follows:

White-no change

Table of Contents / Deleted Details 2012

Cover / Preface

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Standard Specs