The new Path Slope tools are available for download from Arcgis.com. The Path Slope toolbox is an Esri Defense toolbox for planning. The zip file contains the tools, supporting layers for output symbology, a sample geodatabase with a roads feature class, a raster elevation surface, and sample reclassification tables.
The package includes three tools that you can use to derive the slope of road or trail features.
The Path Slope tools allow you to take a set of road or trail features and a raster surface and derive a set of features showing the slope of the trail for each part of the input features.
The Path Slope tool uses slope ranges based on the National System for Geospatial-Intelligence (NSG) Feature and Attribute Coding Catalog (FACC) data dictionary. If you want to set your own slope ranges, you can use the Path Slope By Reclass Values tool and enter the slope categories that you want derived.
If you regularly use a specific set of slope values, you can put them in a table and use the Path Slope By Custom Table tool.
Here’s an example of such a table: