Border Customs at Niagara Fall?

I will be traveling to Canada in April. According to the directions I would be taking I-190 North out of the Buffalo area onto the Queenston-Lewiston Bridge to Highway 405 W headed to Toronto.
What point in this would be the name, or location of the customs border check point I would have to go to from I-190? I would like to be able to type this into my GPS (only U.S. map unfortunately) for the greater portion of the trip

Any help would be greatly appreciated, thank you!

Hi - The customs border check point is here: http://maps.google.com/?ie=UTF8&ll=43.15...
Hope that helps you out.

Customs is at the bridge, so do a Yahoo maps directions chart and find out the total distance from your home to the bridge, and set the mileage.

Them map the distance to Toronto, once your on the 405 you transition into the 403 Niagara to the loop at Burlington and take the exit that says QEW Toronto, and it is smooth sailing the rest of the way, then follow the signs into the downtown area.

The queenston-lewiston bridge is the customs check point, so thats the name of it.
When your on the I190 north you'll see signs going to canada & it runs you right into the bridge. You first pass the duty-free store, then go over the bridge, then you'll come up the the customs check point where you drive upto one of the open booths.
After you cross you will automatically be on hwy 405w, which later merges you to the QEW- keep driving on this & follow the signs to Toronto

My advice would be to go to the Peace Bridge in buffalo instead. The Q-L Bridge frequently has long lineups at Customs in both directions!