Terrestrial Condition Assessment (TCA) Alaska Road Density (Image Service)

Direct Download (Raster Data Gateway)Objective: Identify locations where roads are present at a density that impacts the quality of wildlife habitat and fragments the landscape.Data: A national roads vector dataset has been acquired from the USGS National Transportation Dataset. The data were reattributed to represent three classes: (1) Unimproved, (2) Paved, (3) Light Duty roads. The new classes correspond to the following classes from the National Transportation Dataset: Unimproved: Four-wheel drive roads. Paved: Controlled access highway, Secondary Highway or Major Connecting Road, Ramps Light Duty: Local Connecting Roads, Local Roads Data Format: Polylines were converted to a raster for each TCA assessment year. The value at a pixel corresponds to the class of road at that location. Values differ slightly between the years due to data improvements and updated information from state and local sources:2024: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other2023: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other2022: 1- Light Duty, 2- Paved, 3- Unimproved2021: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other2020: 1- Light Duty, 2- Paved, 3- Unimproved, 4- OtherSpatial Resolution: 10mSource data: USGS National Transportation DatasetAdditional Resources:Details on Method Changes and Source Data VersionsOverview of the Terrestrial Condition Assessment: TCA Hubsite or Landfire Office Hour PresentationExplore the results of the most recent assessment: TCA Interactive Data ViewerLearn more about the TCA KPI: TCA Dashboard*if you have trouble viewing the Dashboard, please submit a Tableau Viewer Access RequestThis record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService For complete information, please visit https://data.gov.