Interesting - that's the first time I've seen toll rates announced.
Unsurprisingly, it vastly undercuts the Ambassador bridge which is $10 USD currently - at $5.75.
I am frustrated they won't take EZPass though. Even the Ambassador is working towards EZPass right now.. It's not hard for Canadians to get EZPasses (I have an NY EZPass, no annual fee and good discounts when driving in the US).
It also undercuts the commercial rate - $12 an axle instead of $20.
It is more expensive than the Blue Water bridge though, which is currently $7 CAD and as low as $4.50 with a responder.