Design standards

These design standards apply to most projects in our City. Browse manuals and specifications for transportation, construction, lighting and more.

Transportation design and construction standards

• King County Road Design and Construction Standards — 2016 Edition
• Manual on Uniform Traffic Control Devices (MUTCD) — 2009, Revised 2012
• Institute of Transportation Engineers Trip Generation Manual — 11th Edition
• Washington State Department of Transportation (WSDOT) Standard Specifications — 2021 Edition
• City of SeaTac Addendum to Road Standards(PDF, 2MB) — November 2020

Surface water management design

• King County Surface Water Design Manual (KCSWDM) — 2021 Edition
• City of SeaTac Addendum to King County Surface Water Design Manual(PDF, 4MB) — 2022
• King County Pollution Prevention Manual (KCSPPM) — 2021 Edition

As-built record drawings

• As-Built Record Drawing Submittal Requirements(PDF, 559KB)

Lighting design

• City of SeaTac Approved Lighting Components Table(PDF, 752KB)