ADOT started using an Intergraph CADD system in 1986. The original system consisted of two VAX 785's and 24 68000 Interview workstations.

About 1991 we started to migrate to the client/server environment. The remaining VAX and the last two 68000 Intermap workstations were retired the first week of July, 1995.

In 1998 the CADD system underwent a system refresh. Windows NT 4.0 became the standard operating system for the CADD system.

In 2005 2005, in conjunction with a PC refresh, Windows 2000 Professional became the standard operating system for the CADD system.

ADOT's CADD system currently consists of the following:

• 119 HP workstations
• 121 HP pc's
• 2 Compaq file servers
• 4 Compaq plot server
• 2 Xerox 8830 plotters
• 3 HP Design jet 2500C Plotters
• 2 HP Deskjet 350C Plotters
• 1 HP Design jet 450C Plotter
• 1 OCE 9600 Plotter
• 2 Intergraph wide format scanners

All of the above hardware is networked via an Ethernet local area network.