Remove Dashboard Access for Admins as well

I know it sounds crazy but I want to remove all dashboard access on newly created sites on a multisite network even for the site's admins!

I want dashboard access accesible only for SUPER admin on a multisite network. I am using a front end posting plugin and do not want admins on newly created sites to even know there is a dashboard in the backend.

I know there is a plugin called Remove Dashboard Access but this prevents everyone from accessing dashboard except for admins. I want some code or plugin that prevents everyone but "Super" admins. Hope this is clear. And I surely hope there is a bit of code I can implement easily.

Thanks everyone!