OS-CONNECT Viewer

Explore Washington's connected sidewalk and crossing data

This Viewer displays OS-CONNECT, a statewide connected pedestrian network dataset for Washington State. It includes sidewalks, crossings, and related pedestrian features intended to support accessibility analysis, planning, and long-term data stewardship.

Use this Viewer to explore the map, inspect feature attributes, and open QA/QC summaries by jurisdiction or unincorporated area. For downloads, exchange, and data lifecycle support, use the TDEI portal.

OS-CONNECT Viewer: Available to the public, no login TDEI: Free, registered access needed for data sharing and management

Main site (sidewalks.washington.edu) → TDEI portal →

View data and QA/QC

Explore the map, inspect attributes, and open QA/QC reports for any jurisdiction in WA State.

How to use QA/QC docs

Download & Integration

Use TDEI for authoritative releases, downloads, and the dataset lifecycle.

TDEI Portal → Registration Download guide

Support Channels

Get help with your requests. Include your area, dataset name/ID, version, and evidence.

Email Support → Office hours

Documentation & Tutorials

Find schema, versioning, known issues, and short tutorials for common workflows.

Documentation → Schema Tutorials

To get help faster: include the jurisdiction or unincorporated area, the TDEI dataset name/ID (shown in the Viewer), the version identifier, and helpful information such as: coordinates, feature IDs, screenshots, or a short screen recording.

Taskar Center for Accessible Technology (TCAT) • University of Washington

Project Partner: Gaussian Solutions LLC

Last updated: 2026

Known Issue: Due to a shift in imagery, you may see the mapping edges not align with underlying infrastructure.

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41.33332, -112.383839

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