redirecting links

I’ve gone through a couple of articles on redirecting but can’t seem to find the answer I’m looking for. I just migrated a site over to workpress from a third party CMS that used absurdly long .aspx page urls. I’ve got several inbound links to these addresses from other sites which give me a decent amount of traffic so I obviously don’t want to break them. I wanted to know if there’s a way to forward those links other than a 301 redirect in the .htaccess. While that’s doable, I think the file would get cluttered with 20-30 301 redirects in it. Any suggestions would be greatly appreciated.