There is a gated road before the bulldog tunnel (castlegar side) that goes down to Shields. To get to Renata from Castlegar, take the rail grade to the bull dog tunnel, turning right just before the tunnel. Take a left shortly after and climb up a little bit, followed by a right on the Bulldog FSR. Follow that road up Bulldog mountain and down the other side to Renata. As far as I know, there's no gates on that one.