Since coming to St. Catharines almost two years ago, I have acquired a significant amount of first-hand experience crossing the border on two wheels. Having even been asked by CBSA officers and tourism officials on both sides of the border on the procedures to cross on a bike, I have put together a guide for your reference:
Queenston-Lewiston Bridge (known by Americans as the Lewiston-Queenston Bridge)
With the non-intuitive process, I already did a little write-up on crossing this bridge, and I’ll point you to that blog entry here.
Given the heavy truck traffic on this bridge, I would highly recommend not using this bridge during the week and waiting until the weekend when the traffic is lighter.
When crossing from Canada to the U.S., there is a sign instructing cyclists to report to the toll captain before proceeding, but when I was last across, I asked the toll captain if I had to wait for him if no one was around. He said you don’t have to wait for anyone, and as long as you know the procedure, you can proceed.
This bridge, connecting the downtown areas of Niagara Falls, Ontario and New York, is only for NEXUS card holders. I had to tell the CBSA officer who interviewed me for my NEXUS card the other day that, as per the NFBC’s website, cyclists are prohibited on this bridge, though there are no signs at the bridge expressly saying so.
This bridge at Niagara Falls is by far the best for a cyclist to use due to the fact that commercial trucks are prohibited and that it connects residential streets rather than Interstate-equivalent freeways. There are no longer any NEXUS lanes, but simply proceed with the cars and pay your 50-cent toll upon leaving the U.S.
For those looking for an extended journey, there is a stop for the #40 NFTA bus, which links Niagara Falls to Buffalo, at the first light past customs. Most NFTA buses have bike racks, and for $2 US, you can extend your range substantially. For more information, consult NFTA’s website.
On this bridge, connecting Fort Erie to Buffalo, cyclists must walk across in either direction. Unlike the NFBC, the bridge authority provides details and maps on their website, and I urge anyone crossing there to visit the site or watch the following video from the bridge authority:
I personally have not crossed into Canada on this bridge on two wheels, but I have walked over in the opposite direction. Do not proceed with the cars and instead approach the building on foot, press the buzzer and wait. Leave your bike outside at the rack provided and enter the building when prompted by a CBP officer. Inside, you will be processed and the officer will wave a handheld radiation detector around you as part of the inspection.
Once cleared, proceed through the parking lot, under the bridge and onto Busti Avenue. Downtown Buffalo will be to the south, and to the north, you can head toward the Shoreline Trail that follows the river north into Tonawanda, going under the South Grand Island Bridge and through Nia-Wanda Park.