I have one project using Angular in this manner, and it's great for it (I don't use Angular's routing system). Another project is using Knockout.JS. I prefer the Knockout method when integrating with a lot of 3rd party/external JQuery components.

In general for a Web apps, you won't go wrong using different pages as a module system. It's proven and when your app gets big enough, you don't necessarily have to worry about a huge up-front download.

BTW, if you develp web apps to be shimmed into native apps, like PhoneGap, or something, then definitely look into the routing aspects of these libraries.