last year, going west from MI, we took I-94 to I-80. There is a short, 1-2 mile stretch if that, that you will pay a toll on. Less than $5 if I remember right. Then you can take I-94 on into IN or MI, and find a route south to Elkhart. I think that I would take and get off at Napier Ave, turn right, and get onto (right again) 30? that will run into South Bend and then go from there. Sorry, even though I grew up in that area around there, I do not remember which way to go from South Bend, to the right or the left (West or East), but GPS should tell you, and be pretty right on.
Bruce And Sheila
'06 Ford Superduty F250 6.0 cc 8' 3.73 4x4
Blue Ox Sway Pro 2014 Flex by Augusta