Breaux Bridge is a city situated in St. Martin Parish, Louisiana, United States. It is part of the Lafayette metropolitan statistical area. The po…Breaux Bridge is a city situated in St. Martin Parish, Louisiana, United States. It is part of the Lafayette metropolitan statistical area. The population was 7,513 at the 2020 census. Known for its vibrant Cajun culture, Breaux Bridge carries the designation La Capitale Mondiale de l’Écrevisse. The title was formally bestowed by the Louisiana Legislature, recognizing the city's prominence in crawfish production and celebration.