California Department of Transportation provides GIS Hub for various data via ArcGIS HUB

CALTRANS GIS DATA

ArcGIS hub can be reached from this Caltrans GIS Data

Here are some data types from the hub

Here’s a summarized table for the provided data:

Data CategoryOrganizationDescriptionTypeLast UpdatedRowsTags
Truck Volumes AADTCalifornia Department of TransportationAnnual average daily truck traffic data, including truck counting and vehicle classification counts. Used for statewide truck flow analysis, planning, and designing highways.Feature LayerFeb 15, 20223,482Clearinghouse, Highway, Truck, Volumes, AADT, CAOpenData, California State Transportation Agency
Rail Interstate StationsCalifornia Department of TransportationIncludes information about four Amtrak long-distance intercity passenger rail stations in California.Feature LayerNov 1, 202136Rail Interstate Stations, Rail, Clearinghouse, CAOpenData, California State Transportation Agency
Rail Interstate RoutesCalifornia Department of TransportationDetails on four Amtrak long-distance intercity passenger rail routes in California.Feature LayerNov 1, 2021710Rail, Rail Interstate Routes, Clearinghouse, CAOpenData, California State Transportation Agency
Adjusted Urban AreaCalifornia Department of TransportationAdjusted urban area boundaries derived from the 2010 Census and other sources.Feature LayerOct 26, 2021170Clearinghouse, Boundary, Adjusted, Urban, Area
MPO BoundariesCalifornia Department of TransportationBoundaries of California Metropolitan Planning Organizations.Feature LayerOct 26, 202118Clearinghouse, Boundary, MPO
Automated Weather Observation SystemCalifornia Department of TransportationInformation on Automated Weather Observation Systems in California, critical for aviation and road safety.Feature LayerDec 21, 2023144Clearinghouse, Aviation, Automated, Weather, Stations, CAOpenData, California State Transportation Agency
National Highway SystemCaltransA network of roads important to the economy, defense, and mobility.Feature LayerJul 17, 20235,430Clearinghouse, Highway, National, System, CAOpenData, California State Transportation Agency
Commercial Vehicle Enforcement FacilitiesCalifornia Department of TransportationLocations of Commercial Vehicle Enforcement Facilities (Weigh Stations) in California.Feature LayerNov 1, 202353Clearinghouse, Highway, Commercial, Vehicle, Enforcement, Facilities, CAOpenData, California State Transportation Agency
Traffic Volumes AADTCalifornia Department of TransportationTraffic volumes on California state highways, adjusted for seasonal and weekly variations.Feature LayerFeb 15, 20227,114Clearinghouse, Highway, Traffic, Volumes, AADT, CAOpenData, California State Transportation Agency
Park and RideCalifornia Department of TransportationLocations of Park and Ride facilities administered by Caltrans.Feature LayerAug 14, 2023335Clearinghouse, Highway, Park, Ride, CAOpenData, California State Transportation Agency
Senate DistrictsCaltrans, Division of DRISI, Office of GISInformation on Senate Districts in California.Feature LayerFeb 1, 202340Senate, Districts, Legislative, Boundary, Boundaries, Clearinghouse
Assembly DistrictsCalifornia Department of TransportationBoundaries of California Assembly Districts.Feature LayerFeb 1, 202380Assembly, Districts, California Boundary, Boundaries, Clearinghouse, Boundary
Local BridgesCaltransInventory of bridges owned by the State of California and local government agencies.Feature LayerJun 21, 202213,332Division of Maintenance, Structure Maintenance & Investigation (SM&I), Bridges, CAOpenData, California Department of Transportation, California State Transportation Agency