Presumably there is a "main gate" that is reliably open. All traffic should be routed that way, to avoid inconveniencing people like the UR reporter. I can think of two ways to discourage Waze from routing people to the gates that are often closed:

• Disconnect the road at those gates. Downside: if local Wazers do occasionally drive through it, it will be flagged.
• Since we are already introducing a penalty for the Private Roads inside the base, place a regular Street segment immediately after the first Private Road segment. The additional transition will increase the penalty, and make the main gate the preferred choice, without leaving an "open" for Waze to flag.