From a press release

Iberville Street at the intersection of Bourbon Street will be closed to traffic until the next three weeks as construction crews continue the French Quarter Infrastructure Improvement Projects. The Iberville intersection closure is in addition to the lane reduction on Canal Street already underway.

Public safety is the top priority. Residents and commuters are reminded to use caution when driving, bicycling and walking near this construction site. Drivers may use North Rampart and Decatur streets as alternative routes to Bourbon Street and Poydras Street as an alternative route to Canal Street. Signage and traffic control measures such as barrels will be on site to direct drivers and pedestrians.

The three week closure of the intersection of Iberville and Bourbon streets is necessary for construction crews to connect the newly installed utilities in the 100 block of Bourbon Street to the new utilities planned in the 200 block of Bourbon Street. Crews are currently reconstructing the roadway and its underground utilities as part of the French Quarter Infrastructure Improvement Project.

The Canal Street lane reduction was required to connect the new water and drainage lines in the 100 block of Bourbon Street to the City’s water and drainage system. The lane reduction was originally scheduled to last two weeks but is slightly delayed due to inclement weather.

The $6 million reconstruction project calls for removing and replacing existing water and drainage lines, repairing the sewer line, repaving the roadway in concrete, installing new sidewalks when necessary and installing Americans with Disabilities Act – compliant curb ramps at intersections.