Great idea long overdue. Make it available to all cars, motorcycles, scooters, bicycles, emergency vehicles, and pedestrians. Build a bridge for EVERYONE for the best bang for the buck. What if the McCully and nearby Kalakaua Ave bridges both get incapacitated at the same time. This new bridge will help. That way no regrets later on. London is full of beautiful bridges. Make a Hawaiian one that the tourists will remember. Try make one with no support column in the middle.