The is hosted by the Cornell Local Roads Program.
Low-Volume Road Thickness: RoadPE: LHI Design Tool
The Excel spreadsheet tool, RoadPE:LHI, was developed for low-volume roads under 2,000 vehicles per day. The tool’s name LHI, stands for Low-volume Highway Inputs as a reminder that these inputs and design outputs are only valid for low-volume roads and streets.
The concept is to use some very basic inputs which can be determined by a small highway department and use other precalculated inputs and design assumptions to determine the design thickness of a new asphalt layer. Because the tool makes many basic assumptions, it is not applicable for many collector and most arterial highways.