Jefferson Avenue drainage work requires tree removal Jefferson Avenue drainage work requires tree removal New Orleans bureau April 02, 2013 Comments NEW ORLEANS — Crews will soon begin clearing trees and shrubs from a portion of the Jefferson Avenue neutral ground in Uptown, the Army Corps of Engineers announced Tuesday. The Army Corps awarded a 38-month contract to Cajun Constructors Inc. to increase underground drainage along Jefferson Avenue between Dryades and Constance streets and on Prytania Street between Nashville and Jefferson avenues. An arborist will remove trees and shrubs on Jefferson between Danneel and Magazine streets before the work begin next month. The removal of the trees and shrubs will take two weeks and will begin April 1. Landscaping will be restored after the project is completed in 2016, the corps said. The corps will work with the city and neighbors on that process. The work is part of the Southeast Louisiana Project, which is expected to reduce the risk of damage from a 10-year rainfall event. That is defined as a rain storm that has a 10 percent change of happening in a year and dumps about 9 inches of rain during a 24-hour period. The contract for this portion of the SELA project includes a traffic-control plan that will ensure most traffic will be maintained on Jefferson, though southbound traffic will be detoured to Nashville. All traffic will be detoured from Prytania during construction of the underground canals. All scheduled SELA work in Orleans Parish should be finished in 2018.