Hong Kong-Zhuhai-Macau Bridge seems to be one of the strategies to make cities along Pearl River one metropolitan city. It means it's birth of the world's most populated metropolitan area.
Surely, it will be possible to visit Macau with 30 mins from Hong Kong by using this bridge, if it's not affected by traffic jam. But, when it comes to wait for a long time ahead of immigration check at the edge of the bridge, travel time will be longer and sometimes will be longer than current ship.
So, rail transport should have been added to the bridge to ensure puctuality.