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Does anyone know where to download a shapefile containing the locations of US interstate and highway exits?

closed as off-topic by Jochen Schwarze, Kadir Şahbaz, csk, user2856, ArMoraer Aug 22 '18 at 8:47

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  • "Questions relating to general IT or with no clear GIS component, are off-topic here but can be researched/asked at Stack Overflow (software development), Super User (computing hardware and software), Database Administrators (relational databases) and other SE sites" – Kadir Şahbaz, csk, user2856, ArMoraer
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I might suggest using OpenStreetMap and the highway = motor_junction tag/value pair.

From Overpass Turbo, use the wizard to build and run a query using that combination, and you'll find you get a decent result set:

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You can either export that result to GeoJSON (or other formats), or use the query in QGIS to download the data directly to your desktop.

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One source might be the census: https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2017&layergroup=Roads

or FHWA: https://www.gis.fhwa.dot.gov/gisData.asp

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