Assists in comparing different pavement designs by analyzing long-term costs, including initial construction, maintenance, and rehabilitation. Downloading DARWin 3.1: Free vs. Official

Some university civil engineering departments still host legacy software for their alumni.

(Design, Analysis, and Rehabilitation for Windows) is a legacy pavement design software developed based on the AASHTO Guide for the Design of Pavement Structures . Software Availability & Status

Darwin was the companion software to the , which remains one of the most widely used design methodologies globally. The name "Darwin" was an acronym reflecting the evolutionary nature of pavement design.