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:
2025: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other
2024: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other
2023: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other
2022: 1- Light Duty, 2- Paved, 3- Unimproved
2021: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other
2020: 1- Light Duty, 2- Paved, 3- Unimproved, 4- Other
Spatial Resolution: 10m
Source data: USGS National Transportation Dataset
Additional Resources:
Details on Method Changes and Source Data Versions
Overview of the Terrestrial Condition Assessment: TCA Hubsite or Landfire Office Hour Presentation
Explore the results of the most recent assessment: TCA Interactive Data Viewer
Learn more about the TCA KPI: TCA Dashboard
*if you have trouble viewing the Dashboard, please submit a Tableau Viewer Access Request