Visqueen on the levees on the eastbank are to help protect exposed dirt from erosion. Update - 5:55 p.m. - Effective tonight, August 27, 2012, at 8pm, the Doullut Canal Bridge on Hwy 11 in Empire, LA will be locked in the down position and closed to all boat traffic. In addition, the flood gate on Hwy 39 at the Plaquemines Parish/St. Bernard Parish line will also be closed at 8pm. The Plaquemines Parish Sheriff’s Office will provide an alternative emergency access lane at that location for emergency vehicles, and local residents with ID. Also only local residents will be allowed below the Oakville Flood Gate on Hwy 23. - Belle Chasse - Belle Chasse – At noon on Monday, August 27, 2012, Plaquemines Parish President Billy Nungesser is calling a mandatory evacuation for the east bank of Plaquemines Parish. Also, a mandatory evacuation of the lower end of the west bank of Plaquemines Parish from Ironton to Venice is being called at noon. The Belle Chasse auditorium will open at noon today as a shelter. Schools in Plaquemines Parish are closed until further notice. Parish officials continue to work to prepare Plaquemines Parish for a hit from Isaac. On the west bank all gaps in Hesco baskets that line a low area of Hwy 23 in the Myrtle Grove area will be closed by noon today. On the east bank all levees that are under construction in the Braithwaite area are being elevated to 8 ½ -9 feet. Visqueen is being placed on the flood side for erosion protection. Residents are urged to stay tuned to local news stations and the Plaquemines Parish website for the latest updates. Those with special needs who need help evacuating should call 504-274-2470.