Roads Central

Snohomish County Roads

Snohomish County Public Works is responsible for the planning, design, construction and maintenance of the transportation infrastructure system in unincorporated Snohomish County. Department staff takes care of 200 bridges and 1,650 miles of roadway. Laid end-to-end, the roads would reach from Everett to Green Bay, Wisconsin! 

Traveling County Roads

• Annual Bridge Report (2021) (2020) (2019) (2018) (2017) (PDF)
• Road Maintenance Division
• Road Projects, Closures and Updates
• Road Resurfacing (Paving and ChipSeal)
•  /2113 Snow and Ice Response
• Weight/Height-restricted Roads and Bridges
•  http://www.wsdot.wa.gov/ WSDOT Information for State Routes

County Transportation Maps

• Arterial Circulation map (PDF map)
• County Road Atlas
• County Road Closures Map (full road closures only)
•  /DocumentCenter/View/6442 Countywide Bike Facilities Map (PDF map)

Doing Business with Public Works

• ADA Pedestrian Facilities in the Public Right-of-Way
• Customer Service Center
• Construction Bid Advertisements: RFQs and RFPs - For bid results call 425-388-3344
• Deeding Right-of-way (Instructions) (Checklist) (Deed Form)
• Drainage Manual (PDF) 
• Engineering Design & Development Standards (EDDS)
• Engineering Services - CADD Standards
• Permitting Work Along County Roads
• Public Disclosure Requests
• Right-of-Way Acquisition and Property Questions related to Snohomish County Road Projects
• Road Improvement District (R.I.D.) process (PDF)
• Title VI - How Public Works applies Federal Civil Rights Act

Traffic Management

• Curb the Congestion
• HAWK Beacon (handout) (video)
• Neighborhood Traffic Calming
• Roundabouts (PDF)
• Traffic Signal Specifications (PDF)

 Traffic Data and Mitigation

• Traffic County 2010-2013 Historical Data (PDF)
• Traffic Data - Traffic Counts, Level-Of-Service, Turning Movement Counts
• Traffic Mitigation 2021 Annual Report (PDF)
• Traffic Mitigation and Concurrency Ordinance (UDC Chapter 30.66B SCC)    

Transportation Planning 

• Council Approved 2023 Annual Construction Plan-ACP (PDF)
• Council Approved 2023-2028 Six-Year Transportation Improvement Program (TIP) (list) (map)
• Light rail planning
• Snohomish County 2035 Comprehensive Plan (adopted in 2015). The plan contains policies and elements with a focus on population and employment growth over the next 20 years.
• Transportation Element (TE) of the County's Comprehensive Plan
• Transportation Needs Report (TNR - information on improvements needed to the county's transportation system.