Drupal section accessible by role

I need to limit access of content on Drupal site based on the Drupal User's Role.

http://site.com/managers/intro

http://site.com/managers/reviews

http://site.com/managers/up-for-raises

The content can be of multiple content types and isn't limited to one specific content-type. These content types will be used elsewhere on the site so I can't lock down the whole content type.

I can get all the nodes/views to live at those addresses by menu settings when they are created, but I don't know how do I limit access via role other than a bunch of preprocess functions in template.php, but that seems to be the wrong way to do it.

I searched for a module and asked on #drupal-support IRC, but no results came up that use drupal roles as the limiting factor.