Just looking at map quest for route to Goshen, don't want to pay tolls on I-80 ( it's a heritage thing), going across border at Sarnia /Port Huron, as for the trip that the OP asked about the I-75 where it meets I-69 was just terrible I-69 was a little better when we were on it last October, Michigan's roads are not well tended.
"Well that didn't go as expected"
2015 Chev 2500HD Highcountry Duramax
Cedar Creek Silverback 33IK
Donald&Casey cairn terrier
Rest in Peace Mary my darling wife.
Scottish by birth Canadian by time.