The City of Seattle has been publishing a version of our Standard Specifications and Plans dating back to 1910. Historic Standards are presented below based on the year the document was published. Certain previous editions of the City’s Standards augmented publications by the APWA, WSDOT and other agencies. If you have questions about which Standards applied during a certain period of time, please contact the City of Seattle’s Construction Standards Engineer Randy Earlywine at

Standard Specifications and Plans for Municipal Construction

The following documents are in PDF format.