Doug,
Yes, these two methods are most popular accross the contintent. Simple really. Here's some technical information.
Here's the Simpson way:
http://www.strongtie.com/ftp/fliers/F-ICFVL08.pdf
And here's the bolt way:
http://www.huduser.org/Publications/PDF/icf_2ed.pdf
I think it can be found on I-65 and I-67
Regards,
Baldwin