Thousand Islands Bridge Hill Island in Canada. Thousand Islands International Bridge system is a series of five bridges that span parts of the St. Lawrence River, ultimately connecting both banks. The southern end of the bridge connects with Interstate 81 and the northern end of the bridge connects to Highway 401 via Highway 137. There is also an interchange with the Thousand Islands Parkway on the Ontario side. The bridge suffered aerodynamic-related structural problems (oscillations) shortly after its opening, these were quickly corrected via structural upgrades. The bridge system is administered by the Thousand Islands Bridge Authority, a New York State public benefit
North American river otter length. A shorter trachea may improve air exchange and increase lung ventilation in diving mammals. Most mustelids, including otters, have specialized teeth, including sharp canines and carnassials that inflict lethal bites to prey. Also, North American river otters have large molars used for crushing hard objects, such as the shells of molluscs. An adult North American river otter has a total of 36 teeth. Additional premolars may be present. The dental formula is . North American river otters are active year-round, and are most active at night and during crepuscular hours. They become much more nocturnal in the spring, summer,