Bay Bridge is out of Hayyona (Multiplex), whose seven foals include three runners, two of them winners; he was the fourth foal. His half-sister Nataleena (Nathaniel) has won five races. Hayyona is a half-sister to Shimraan (Rainbow Quest), winner of the Gr.2 Prix Eugene Adam.

Second dam Shemriyna (King Of Kings) was a winner. Her half-siblings include Shamkiyr (Sea The Stars), second in the Gr.1 Prix du Jockey Club, Shendaya (Danehill Dancer), placed in the Listed Prix Casimir Delamarre and grandam of Like A Charm, placed in the Gr.2 Prix de Sandringham, and of the Listed-placed Shenoya, and Pecking Order (Fastnet Rock), second in the Listed Prix des Tourelles.

Third dam Shemaya (Darshaan) was a stakes winner, taking the Listed Prix Casimir Delamarre, and bred Shamkiyr. She is a daughter of Shemaka (Nishapour), winner of the Gr.1 Prix de Diane, and is related to Shemima (Dalakhani), winner of the Gr.3 Prix Allez France and dam of Cormorant (Kingman), winner of the Gr.3 Derrinstown Stud Derby Trial.

Another relative is Shemala (Danehill), winner of the Listed Prix Madame Jean Couturie and also a daughter of Shemaka. Descendants of Shemala include Shakeel (Dalakhani), winner of the Gr.1 Grand Prix de Paris.

Hayyona has the unraced 2-year-old filly Stormy Sea (Territories), plus a yearling colt by Time Test.