Design a PCB for a Vending Machine Matrix Motor Driver

We are looking to drive a matrix of 24V DC Motors by i2c. (7 by 10 Matrix) This is to replace an old vending machine motherboard and to have it interface with an Arduino controller by i2c. We can provide detailed pictures of the motherboard made in 1984; It uses the following parts to drive the motors: MJE700 (60V / 4A) ULN2064B (50V / 1.5A) The motor detects a full rotation by shorting the motor briefly; I assume the motherboard detects the current drop and stops powering the motor until the next vend command. We would like to control vends by i2c from another micro controller. The matrix of motors is fully mapped out. The finished PCB should take mains 120v AC in and power the 24 volt motors using fault tolerant parts (ie; handling high current motor draw and feed back, exceeds max values on parts) unidirectionally. and controlled by an i2c input.