The only people who genuinely get screwed are people who live in Clarksville and Jeffersonville and commute to downtown Louisville, because they will have to pay tolls on a bridge that already exists.
Anybody commuting to the East End gets their toll costs offset by the reduction in gas costs due to a new, more direct route, and people commuting to downtown Louisville from anyplace other than Clarksville and Jeffersonville can use I-64 as a free alternative without too much added travel time.
Also, if Hoosiers are paying 80% of the tolls, then that means that they are benefiting from 80% of the trips on the new bridge, and that blog doesn't go into the positive economic impact that Clark County should see from having the new bridge.
Is it the best deal for Indiana? No. Is it a better deal than not building the bridge at all? Absolutely.