Transportation Planning

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The Engineering Division provides the following Transportation Services:

International Blvd.

Six-Year Transportation Plan

The City of SeaTac, along with all cities in the State of Washington, is required to adopt a minimum six year Transportation Plan by July 1st of each year. 

Six-Year Transportation Improvement Plan ((TIP) 2020 - 2025  [PDF]   


 Autonomous Vehicle Resolution


City of SeaTac Adopts Complete Streets Ordinance 


Des Moines Memorial Drive South Corridor Plan



2017 Pavement Management Analysis Report

2017 Pavement Management Analysis MAPS



The Transportation Master Plan (TMP) was adopted by City Council on July 28, 2015 (Resolution #15-013) as the background report to the Transportation Element (TE) of the Comprehensive Plan.  Together, the TE and TMP provide a long-range vision for the City's transportation system based on year 2035 land use projections and growth at Seattle-Tacoma International Airport.  The TMP contains an inventory of existing transportation system and conditions, describes the travel demand model assumptions and results, defines projects to improve system needs, forecasts financial components and evaluates  funding and implementation strategies.

The TMP will be used to prepare proposed Annual Transportation Improvement Plans (TIPs) and Capital Improvement Program (CIP) updates to ensure transportation projects and programs support the City's vision and Comprehensive Plan.

Complete Transportation Master Plan (8MB)

Chapter 1.  Introduction

Chapter 2.  Inventory of Existing Transportation System and Conditions

Chapter 3.  Travel Forecasts and Alternative Evaluation

Chapter 4.  Multi-modal Transportation Systems Plans

Chapter 5.  Funding and Implementation Strategies

Supporting Documents