: DARWin (Design, Analysis, and Rehabilitation for Windows) 3.1 automates the complex hand calculations of the 1993 AASHTO guide, including the calculation of Structural Numbers (SN) for flexible pavements and thickness requirements for rigid pavements. Legacy Status : AASHTO officially DARWin 3.1 in December 2011. It was replaced by AASHTOWare Pavement ME Design
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AASHTO offers Darwin through a to sustain development and provide professional support. There is no “free version” or “trial version” officially available for Darwin 3.1 or any recent release. Some older, obsolete versions may have been circulating unofficially, but these are unsupported, outdated, and often illegal. : DARWin (Design, Analysis, and Rehabilitation for Windows)
Engineering workstations often contain sensitive project data, including bridge plans, client information, and proprietary calculations. Malware can exfiltrate this data. There is no “free version” or “trial version”