Civil engineering and infrastructure repair in New Orleans after Hurricane Katrina Sea flood of 1953 in which 2,170 people were killed. Since Katrina, the US, through the Army Corps of Engineers, has made a $14.45 billion investment in the area around New Orleans. Some of the projects include: Approximately 45 bridges were damaged by some aspect of the hurricane. Several major bridges were among the worst damaged, with the I-10 Twin Span Bridge as the most catastrophic failure with over 470 spans separated from their supports and nearly 65 fallen completely into the water. Other vital bridges damaged enough to impede traffic included the Pontchartrain Causeway, St. Louis Bay Bridge, and
1915 New Orleans hurricane the hurricane would eventually make landfall—were first issued by the Weather Bureau on the morning of September 28 and disseminated via telegraph and mail. That afternoon, a hurricane warning was issued for coastal regions of the Gulf of Mexico from Pensacola, Florida to New Orleans, Louisiana. Extensive efforts to communicate the imminent threat the hurricane posed began in earnest following the issuance of warnings for the area, with public interests being advised that the approaching storm could be stronger than the 1909 Grand Isle hurricane, which served as New Orleans' strongest documented tropical cyclone at the time. Warnings continued into