Gateway to Canada, the Blue Water Bridge is architecturally appealing and efficient. We've driven through this bridge countless times and never really had a huge issue in wait times. During holiday peak hours (around 11am-1pm), things get a little backed up, but nothing horrific. Fortunately during those times, there are multiple booths open to pay your toll.
As of December 2013, the toll is $3, and fluctuates based on the economy. I have paid $3.25 before, and $3.50 on the way back. MDOT has done a good job keeping these fees from creeping up too much. Booth attendants are always pleasant and friendly, and for those afraid of face time, you can opt to go to the exact change booth. Keep in mind that it has to be exact change, or you will not be able to get through. We've seen too many times when people have attempted getting through, to only realize they have to reverse. Be considerate to the other drivers, and look before you proceed! :)
Though most of the time we just drive across the bridge, during the spring, summer, and fall seasons, the bridge itself is lovely as it overlooks the lake and the nearby Thomas Edison Inn is nice to see. The walk way that flanks the lake is wonderful to walk on when the sun is out. As you walk, look up and you'll see the wonderful architecture of this bridge. Whether you actually use the bridge, it's worth paying a visit just to see. :) read more