Security bollards, intended to prevent vehicular entries into pedestrian zones, were absent before a truck attack in New Orleans on New Year's Day.
The incident claimed 14 lives and left 35 injured, prompting Louisiana officials to confirm that the barriers were malfunctioning and under renovation.
Authorities plan to enhance safety measures leading up to the NFL Super Bowl scheduled for February 9.
New Orleans Police defended existing protocols after a suspect managed to circumvent them, leading to police labeling the event as an act of terrorism.
Mayor LaToya Cantrell highlighted the issue of malfunctioning bollards, which had been problematic due to clogs from Mardi Gras beads.