Call a page from the theme directly

[Domi]

The solution I have found :

1) create a page "under-construction" with status private and template "under-construction.php"
2) call it like this :

PHP Code:

<a href="<?php get_site_url(); ?>index.php?id=under-construction">Consulting</a> 


is there another simpler solution and without creating a page ?

Domi.