Transportation Data & GIS

Transportation Data & GIS Office (TDGO) - Home

(formerly STCDO/GRDO)

We support the maintenance, preservation and operation of the Washington State transportation system by providing customers with timely, accurate and reliable roadway, traffic and crash data. We collect, process, analyze and report data for over 7,000 miles of state routes and over 80,000 miles of public roads. We deliver specialized GIS products and services in support of business operations throughout WSDOT.


Products and Services


Crash Data Request Form

State Route Locator Log

Crash Report FAQ's

Annual Collision Data Summary

Crash Data Reports by Request
(Standard Detailed History, Summary Reports)



Annual Mileage/Travel Info

Annual Traffic Report

Speed Report

Short Count Factoring Guide

Short Count Traffic Services

Permanent Count Traffic Services

Permanent Traffic Recorder (PTR) Reports

Permanent Traffic Recorder Location (PTR) Report

Peak Hour Report

Traffic Volume Map Application

Traffic Data Request Form

Travel Data Reports by Request
(AM/PM Traffic Summary, Hourly Volume Detail, Vehicle Classification)



GIS Maps and Data

Download GIS Data (Catalog)

Online Map Center

GeoPortal Map Application

GeoPortal Map Users Guide

WSDOT Map Applications

Joint Agency GIS Day



State Highway Log

State Route Web Application (SRweb)

State Route Web Help

Interchange Viewer

Functional Classification


Digital Imagery & Duplication Services

National Highway System (NHS)

Roadway Reports by Request
(Horizontal/Vertical Alignment, Road Life, Highway Classification)