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Geospatial Online Transportation User Group

State Data Portals

GIS Open Data Portal
State Top result Second result
Alabama https://data-algeohub.opendata.arcgis.com/
Alaska https://data-soa-akdot.opendata.arcgis.com/ https://gis.data.alaska.gov/
Arizona https://azgeo-open-data-agic.hub.arcgis.com/
Arkansas https://gis.arkansas.gov/
California https://gisdata-caltrans.opendata.arcgis.com/
Colorado https://data-cdot.opendata.arcgis.com/
Connecticut https://data.ct.gov/
Delaware https://data.delaware.gov/
District of Columbia https://opendata.dc.gov/pages/roadway-centerlines
Florida https://www.fdot.gov/agencyresources/mapsanddata.shtm
Georgia http://www.dot.ga.gov/DS/Data
Hawaii https://geoportal.hawaii.gov/
Idaho https://data-iplan.opendata.arcgis.com/
Illinois https://gis-idot.opendata.arcgis.com/
Indiana https://gis-indianamap.opendata.arcgis.com/
Iowa https://data.iowadot.gov/ https://public-iowadot.opendata.arcgis.com
Kansas https://www.kansasgis.org/
Kentucky https://kygeoportal.ky.gov/geoportal/catalog/main/home.page https://opengisdata.ky.gov/
Louisiana https://data-ladotd.opendata.arcgis.com/
Maine https://www.maine.gov/geolib/catalog.html#transportation https://hub.arcgis.com/search?q=mainedot
Maryland https://data-maryland.opendata.arcgis.com/pages/mdot https://data.imap.maryland.gov/
Massachusetts https://geo-massdot.opendata.arcgis.com/
Michigan https://gis-mdot.opendata.arcgis.com/
Minnesota https://gisdata.mn.gov/
Mississippi https://opendata.gis.ms.gov/
Missouri
Montana https://opendata.gis.ms.gov/ https://mdt.maps.arcgis.com/home/index.html
Nebraska https://www.nebraskamap.gov/
Nevada https://www.nebraskamap.gov/
New Hampshire https://www.nhgeodata.unh.edu/
New Jersey https://njogis-newjersey.opendata.arcgis.com/
New Mexico https://www.arcgis.com/home/item.html?id=e1114c2368374dc3911b03bdbf501233
New York https://gis.ny.gov/gisdata/ http://gis.ny.gov/gisdata/inventories/member.cfm?organizationID=539
North Carolina https://ncdot.maps.arcgis.com/home/index.html https://connect.ncdot.gov/resources/gis/pages/gis-data-layers.aspx
North Dakota https://www.gis.nd.gov/
Ohio https://gis.dot.state.oh.us/tims/
Oklahoma https://gis-okdot.opendata.arcgis.com/
Oregon
Pennsylvania https://data-pennshare.opendata.arcgis.com/
Puerto Rico
Rhode Island https://www.rigis.org/
South Carolina scdot.maps.arcgis.com https://smpesri.scdot.org/portal/home/
South Dakota https://opendata2017-09-18t192802468z-sdbit.opendata.arcgis.com/search?tags=transportation https://opendata2017-09-18t192802468z-sdbit.opendata.arcgis.com/
Tennessee
Texas https://gis-txdot.opendata.arcgis.com/
Utah https://data-uplan.opendata.arcgis.com/
Vermont https://geodata.vermont.gov/ https://vcgi.vermont.gov/
Virginia https://www.virginiaroads.org/
Washington https://gisdata-wsdot.opendata.arcgis.com/
West Virginia https://data-wvdot.opendata.arcgis.com/
Wisconsin https:/data-wisdot.opendata.arcgis.com https://geodata.wisc.edu
Wyoming https://gis.wyoroad.info/
GIS Home Page
State Top result Second result
Alabama https://www.dot.state.al.us/
Alaska https://dot.alaska.gov/stwddes/gis/ https://akdot.maps.arcgis.com/home/index.html
Arizona https://azdot.gov/planning/transportation-analysis/geospatial-analysis
Arkansas https://ardot.maps.arcgis.com/home/index.html    https://gis.ardot.gov/portal/home/
California https://dot.ca.gov/programs/geospatial-data
Colorado https://dtdapps.coloradodot.info/otis
Connecticut https://connecticut-ctdot.opendata.arcgis.com/
Delaware https://deldot.gov/map/index.shtml
District of Columbia https://wiki.ddot.dc.gov/display/GIS/GIS
Florida https://www.fdot.gov/gis
Georgia http://www.dot.ga.gov/DS/Maps/geopi
Hawaii
Idaho https://itd.idaho.gov/road-data/
Illinois https://gis-idot.opendata.arcgis.com/
Indiana https://www.in.gov/gis/
Iowa https://iowadot.gov/gis
Kansas https://www.ksdot.org/maps.asp
Kentucky https://transportation.ky.gov/Pages/Maps-Resources.aspx https://kytc.maps.arcgis.com/home/index.html
Louisiana
Maine https://www.maine.gov/mdot/mapviewer/
Maryland https://data-maryland.opendata.arcgis.com/pages/mdot https://roads.maryland.gov/mdotsha/pages/Index.aspx?PageId=306
Massachusetts
Michigan https://www.michigan.gov/mdot/0,4616,7-151-11151_86121—,00.html
Minnesota https://www.dot.state.mn.us/maps/index.html
Mississippi https://www.gis.ms.gov/
Missouri www.modot.org/maps https://modatazone.modot.org
Montana https://www.fdot.gov/gis https://www.mdt.mt.gov/publications/maps.shtml
Nebraska https://ndor.maps.arcgis.com/home/index.html https://dot.nebraska.gov/travel/map-library/
Nevada https://www.dot.nv.gov/doing-business/about-ndot/ndot-divisions/engineering/location/geospatial-data
New Hampshire https://www.nh.gov/dot/org/projectdevelopment/planning/gis-data-catalog/
New Jersey https://www.state.nj.us/transportation/refdata/gis/
New Mexico https://www.dot.nm.gov/travel-information/maps/
New York https://www.dot.ny.gov/gisapps
North Carolina https://connect.ncdot.gov/resources/gis/Pages/default.aspx https://connect.ncdot.gov/resources/gis/pages/gis-data-layers.aspx
North Dakota https://www.dot.nd.gov/business/gis-mapping.htm
Ohio https://gis.dot.state.oh.us/tims/
Oklahoma https://gis-okdot.opendata.arcgis.com/
Oregon https://www.oregon.gov/odot/data/pages/maps.aspx
Pennsylvania https://gis.penndot.gov/ https://gis.penndot.gov/onemap/
Puerto Rico
Rhode Island https://www.rigis.org/
South Carolina https://www.scdot.org/travel/travel-mappinggis.aspx
South Dakota https://dot.sd.gov/transportation/highways/planning/gis
Tennessee https://www.tn.gov/finance/sts-gis/gis/data.html
Texas https://www.txdot.gov/inside-txdot/forms-publications/maps.html
Utah https://gis.utah.gov/
Vermont https://vtransparency.vermont.gov/ https://vtrans.vermont.gov/
Virginia https://vdot.maps.arcgis.com/ https://vdot.maps.arcgis.com/home/gallery.html
Washington https://wsdot.wa.gov/about/transportation-data/statewide-gis-maps-data-layers
West Virginia https://transportation.wv.gov/SDMT/GIS/Pages/default.aspx
Wisconsin https://wisdot.maps.arcgis.com/home/index.html
Wyoming https://www.dot.state.wy.us/home/planning_projects/Traffic_Data.html