I dont have folder /local in /usr

Hi all,

I have a big problem, i would install D2XX drivers on my BBB ( http://www.ftdichip.com/Drivers/D2XX.htm ) but i need to copy files in the folder /usr/local but i dont have the folder local in the folder /usr!!! i have arm-angstrom-linux-gnueabi , bin ,etc, games, include , lib, libexec, sbin , share and src in the usr folder but no local folder so how I can do ? i need to create the folder local??