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Chapter 3
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Right-of-Way Improvement Requirements
3.1.1a Existing Streets, Arterial Width Requirements
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Arterial Street Right-of-Way and Roadway Width Requirements for Existing Streets

Street right-of-way and roadway widths for most existing arterials have been established by the Transportation Department. Those arterials which require additional right-of-way to provide for adequate pavement width, sidewalks, and/or street trees have been identified on the Arterials list.

Required Street Right-of-Way and Roadway Widths for Seattle Arterials
Arterial Listings »

Where the street right-of-way or roadway width has not been previously established, it will be determined for a permit applicant by the Transportation Department upon request.

When new street improvements are required and the existing street right-of-way width does not meet the established width, additional street right-of-way shall be dedicated. There are circumstances where there is no requirement for the installation of curb, sidewalk, or pavement improvements. When a curb already exists, a setback and No-Protest Agreement are permitted in lieu of a dedication and improvements.

When the existing roadway is narrower than the required roadway, and no new pavement or curb improvements are required, a No-Protest Agreement s hall be provided in lieu of roadway widening. Get more information on No Protest Agreements.

There have been recent changes to the land use codes regarding sidewalk requirements. A complete summary of land use code changes can be read on the DPD Sidewalk Improvement Initiative web page. This code change affects Urban Villages, Urban Centers, along arterials and in Pedestrian zones (these are within some but not all Neighborhood Commercial zones). The DPDApplicant Services Center is a good resource to ask about the specifics of whether or not your development is included in a pedestrian zone.

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Detailed Table of Contents
Chapter 3
Right-of-Way Improvement Requirements
3.1 Overview of Requirements from the Land Use Code (Ch. 23.53 & 23.22)
3.2 Requirements for Streets, Alleys and Easements
3.3 Contact Information
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