Seattle Streets data from the Hansen Asset Management System includes arterial classification, street names, block numbers, direction, one-way status, surface width and type, pavement condition, speed limit, and percent slope. The City of Seattle provides this data, sourced from the Street Network Database (SND). The dataset is updated weekly.
Use Cases
- Analyze traffic flow and road hierarchy based on arterial classification.
- Assess infrastructure maintenance needs based on pavement condition scores.
- Model vehicle speed and slope for transportation safety studies.
- Map street networks and attributes for GIS applications.
- Filter and query specific street types, such as arterials or transit routes, for targeted analysis.
Strengths
- Includes multiple infrastructure attributes such as pavement condition, speed limit, and surface type.
- Update cycle is weekly, suggesting regular maintenance.
- Linework is sourced from the authoritative Street Network Database (SND).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- City of Seattle Department of Transportation (SDOT)
- Collection Method
- From the Hansen Asset Management System and the Street Network Database (SND).
- Freshness
- Weekly update cycle.
- Geography
- Seattle, Washington, USA