Washington State City Street and Road Standards
Contents
Introduction to Street and Road Standards
Chapter 35.78 RCW requires cities and counties to adopt uniform definitions and design standards for municipal streets and roads. Standards for arterials are set through RCW 35.78.030 and RCW 35.78.040 by a state design standards committee in cooperation with the Washington State Department of Transportation (WSDOT). These uniform design standards apply to all new construction on major arterial and secondary arterial roads and streets and to reconstruction of old such roads and streets as far as practicable. No deviation from the adopted design standards may be made without approval of the state aid engineer.
- City/County Design Standards (
2.5 MB) - Ch. 42 LAG Manual
- Local Agency Guidelines Manual - The LAG manual provides policies and standards for local agencies to follow when using Federal Highway Administration (FHWA) funds for transportation projects
- WSDOT Engineering Publications On-Line Technical Manual Library
- City And County Design Standards Committee
Washington City Street and Road Standards
Links to city Web sites with representative street and road standards for cities of given size ranges are shown below. Some of these standards are part of overall development requirements, others are stand alone documents.
70,000 Population and Larger
- Bellingham - Development Guidelines and Improvement Standards
- Federal Way - Development Standards
- Seattle - Standard Plans and Specifications
- Spokane Municipal Code Ch. 17H.010 - Street Development Standards
- Vancouver ( 863 KB) - Street Standards
- Yakima - Engineering
30,000 to 70,000 Population
- Bothell - Design & Construction Standards and Specifications, 2000 Edition
- Kennewick - Standard Specifications
- Lacey - Development Guidelines and Public Works Standards
- Longview - Engineering Division - Special Provision & Standard Drawings
- Lynnwood - Public Works Standard Plans Index
- Redmond - Standard Details
- Walla Walla - Standard Plans
15,000 to 30,000 Population
- Bainbridge Island - Engineering Standards
- Ellensburg ( 114 KB) - Development Standards, 2006 edition
- Marysville - Design Standards
- Moses Lake - Engineering Projects
- Pullman - Standard Drawings Download
- Tukwila ( 422 KB) - Development Guidelines and Design Construction Standards
5,000 to 15,000 Population
- Kelso (Same adopted standards as Longview) - - Standard Plans and Specifications
- Mill Creek ( 77 KB) - Roadway Functional Classification
- Port Townsend - Choose Design Engineering Standards in left column
- Woodinville - Standards/Codes/ Plans - Scroll down to Public Works - Transportation Infrastructure Standards and Specifications (TISS) near bottom of page
Less than 5,000 Population
- Ridgefield - Engineering Standards for Public Works Construction