Which street is named for the city builder who dug a canal from Bayou St Jean?

The street named for the city builder who dug a canal from Bayou St. Jean is indeed Carondelet Street. Jean-Baptiste Le Moyne de Marigny de Mandeville, often referred to as Carondelet after a prominent figure in the city's early history, was instrumental in the development of New Orleans and its infrastructure. His efforts in digging the canal facilitated better drainage and access to the bayou, which was key to the city’s growth and trade.

Carondelet Street serves as a reminder of the rich history and the figures that contributed significantly to the transformation of New Orleans into an important urban center. The association with significant historical figures underpins the importance of this street in the cultural landscape of the city. Other streets, while significant in their own right, are not directly connected to the specific historical act of the canal digging associated with Bayou St. Jean.