With the difference in rules and procedures between crossing from the US to Canada at a land crossing versus an airport, I expect many people are considering walking across. To that end, it might be helpful to discuss which land crossings are best for pedestrians and also to share experiences in walking across them. (Considerations: ease of access to the American side of the bridge; ease of access for getting picked up or meeting a cab at the Canada side of the bridge; walking distance across the bridge; safety factors; etc.)

Let's not let this turn into another discussion of one-way car rentals, since that's already been discussed at length in other threads. Instead, let's keep it to walking across.

Personally, I'm interested in knowing which of the Niagara-area bridges is best, especially for those flying into the Buffalo airport.

(Personal info: Much of my family is in the US and some are elderly, so I maintain a kind of emergency plan in case I need to get there and back in a hurry.)