WinPAS 12 is compatible with all versions of Windows, including Windows 7, and both  architecture types (32/64-bit).

WinPas 12, which is based on the commonly-used AASHTO 1993 pavement design guide, has been updated to make it compatible with current Windows-based operating systems, has a new GUI (or graphical user interface), and includes updated help screens which make the software easier to use than ever before.

WinPas 12 is available as a free download and may be used without a license for up-to 30 days.  The complete install package and patches were updated on (2/27/14).

Installation Instructions

  1. Unzip the contents of the downloaded file (WinPAS
  2. Run Setup.exe
  3. Follow the installation wizard instructions

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If you already have WinPAS 12 installed, you can download and run a cumulative patch update to get the latest changes to WinPAS 12. See patch change log for details.

Patch Change Log

Cumulative Patch Update 4 for 32-bit OS

Cumulative Patch Update 4 for 64-bit OS

Contact for Software Support