called Isla Pasaje and Isla de San Ildefonso . It is located approximately 17 miles (27 km) east of the Puerto Rican mainland, 12 miles (19 km) west of St. Thomas and 9 miles (14 km) north of Vieques . Culebra is spread over 5 wards and Culebra (Dewey) Pueblo (The downtown area and the administrative center of