Iowa DOT Open Data

Welcome to the Iowa Department of Transportation's public platform for exploring and downloading open data. This site is dedicated to providing the traveling public, lawmakers, and partners with clear, understandable information regarding the management of Iowa's transportation infrastructure. The Iowa DOT is committed to maximizing the performance of existing structures, minimizing costs, and enhancing the public’s travel experience within the state. They continuously develop new tools to help stakeholders visualize their performance metrics.

All date/times in the REST service are set as UTC, unless otherwise noted. ArcGIS Online client applications, including this open data site, treat all date/time fields as UTC and convert them to the user's local timezone. However, if data is accessed directly through the REST service or downloaded, the time will remain in UTC.

The platform categorizes its datasets for easy exploration, including Operations (real-time data like snowplow fleets, ITS devices, weather), Crash (city/county crash data), Improvement (assets identified for grants or programs), Classifications (assets by specific types like right-of-way), Inventory (general assets like maintenance garages), Aviation (runways, heliports), and Transit (public transportation assets).