Allegheny CountyAuthoritative dataset of the beltway system in Allegheny County. The system was developed to help motorists navigate through Allegheny County on low-traffic roads. The belts are arranged in concentric circles and color-coded red, orange, yellow, green, blue, and purple. If viewing this description on the Western Pennsylvania Regional Data Center's open data portal ( http://www.wprdc.org ), this dataset is harvested on a weekly basis from Allegheny County's GIS data portal ( http://openac.alcogis.opendata.arcgis.com/ ). The full metadata record for this dataset can also be found on Allegheny County's GIS portal. You can access the metadata record and other resources on the GIS portal by clicking on the "Explore" button (and choosing the "Go to resource" option) to the right of the "ArcGIS Open Dataset" text below. Category: Transportation Organization: Allegheny County Department: Geographic Information Systems Group; Department of Administrative Services Temporal Coverage: 2015 Data Notes: Coordinate System: Pennsylvania State Plane South Zone 3702; U.S. Survey Foot Development Notes: none Other: none Related Document(s): Data Dictionary ( https://docs.google.com/spreadsheets/d/1WNzi_JLaIL1eR5RWw0FlSAwqIrdExs9Vy2Iui_NE9Go/edit?usp=sharing ) Frequency - Data Change: Not updated (historical only) Frequency - Publishing: Not updated (historical only) Data Steward Name: Eli Thomas Data Steward Email: gishelp@alleghenycounty.usallegheny-county-beltway-system-street-centerlinesengWestern Pennsylvania Regional Data Center Open DataPublicTransportationAllegheny County Beltway System Street CenterlinesDatasetsPennsylvania--Allegheny CountyPennsylvaniaLast Modified: 2026-02-21