That was my first thought. Maybe they are designed to sheer off in a big storm? They look like toothpicks in relation to that beast.
I think they'd run huge steel wires to points already on the seabed, and tighten the bejeez out of them. Same thing they'd do for a suspension or cable-stayed bridge
In fact, same thing they did for the east side of the San Francisco-Oakland Bay Bridge.
Very few people know that is just one wire holding up the entire "suspension" span just off Treasure Island.