Delegate Menu Administration | drupal.org

Allows you to allow select user roles to administer individual menus or menu items.
Quick Start:

1. Enable the module
2. Go to 'admin/user/permissions' and give the 'administer some menus' permission to any role that you want to give administrative access to all or part of a menu.
3. Go to 'admin/build/menus' (with the super user or another user with 'administer menu' permissions) and check which roles you would like to administer which menus.
4. If you don't want to give complete admin access to a whole menu, click on one of the menu links and give admin perms to only the sub-trees or sub-items of your choice.

If you gave a role an entire menu to administer, they'll be able to visit the 'admin/build/menus' page themselves and see all (and only) the menus they have access to.

If you gave a role only partial access to a sub-tree or sub-item, they'll be able to select that item from the Menu drop-down from the node form when adding/editing a node , or when editing that menu item itself or one of it's sub-items.

Unfortunately, there is no dedicated administration pages yet for users that only have partial admin access to a menu, so they'll be able to administer those menus only via the node form, or by knowing the url to edit a menu item and select it's parent from there.