Boston Maps
Boston Street Segments (SAM System)
City of Boston street segments data from the Street Address Management (SAM) system. Updated nightly.
- GeoJSON
- CSV
- ArcGIS
- HTML
- KML
Updated Nov 11, 2026
Datasets
4 datasets
Boston Transportation Department
Traffic-Related Data
Traffic-related data collected by the Boston Transportation Department, as well as other City departments and State agencies. Various types of counts: Turning Movement Counts, Automated Traffic Recordings, Pedestrian…
- HTML
Updated Feb 4, 2026
Boston Maps
City of Boston Managed Streets
This layer represents all the public and many of the private roadways in Massachusetts, including designations for Interstate, U.S. and State routes. Formerly known as the Massachusetts Highway Department (MHD) Roads,…
- GeoJSON
- CSV
- ZIP
- ArcGIS
- HTML
Updated Dec 5, 2024
Boston Maps
Boston Street Segments Metadata
Description of data fields in the Boston street segment data
- HTML
Updated Oct 18, 2024