The Courier and Daily Comet The Louisiana Department of Transportation and Development advises motorists that the intermittent lane closures on La. 20 near the bridge at Bayou Chevreuil in Vacherie have been extended. The closures, which began Jan. 20, will last through Feb. 12. The intermittent lane closures will take place between 8 a.m. and 3 p.m.