to the Louisiana roadway systems was mostly due to washouts and has been deemed minimal. Other infrastructure repair On Monday, September 5, 2005, electrical power began to be restored to buildings in the central business district of New Orleans on a priority basis. By Thursday, September 8, Entergy had restored 9 of 17 electricity generating units in the New Orleans area to service. Entergy's 1000 MW Waterford and Watson plants were still out of service, with the Watson plant expected to require 6–12 weeks to repair. By Friday, electrical power had been restored to 11% of New Orleans customers. Also, officials were organizing to have work begin as soon as Monday, September 12, to rebuild the, "twin spans" I-10 bridge to New Orleans. On Tuesday, September 6, 2005, the Port of New Orleans, the largest U.S. port in terms of tonnage handled, was able to receive and service relief ships. It was estimated that resumption of commercial shipments would take at least 14 days. By Wednesday, September 7, 2005, safe drinking water was available in some West Bank areas, including Algiers and the Jefferson Parish suburbs, and some water pressure was available in New Orleans for fire fighting. All sewage from the city was flowing untreated into the Mississippi. The Lower Mississippi River was open during daylight hours to shallow draft traffic and deep draft vessels less than 39 feet (12 m). A contractor removed obstacles in the Southwest Pass, which was restricting deep draft navigation. The Louis Armstrong New Orleans International Airport reopened on Monday, September 12, 2005, to cargo traffic, with limited passenger service expected to resume Tuesday, September 13, 2005. Officials awarded a $30.9 million contract to repair the, "twin spans" I-10 bridge to New Orleans to Boh Brothers Construction Co. on September 12, 2005. It was estimated that 45 days would be required before the bridge could reopen to normal traffic. Water pressure had now been restored in the majority of the Jefferson Parish. A "boil water" order was still in force on the East Bank, but had been lifted for the West Bank. On the East Bank, 17% of sewage pumps were operational, and 39% were operational on the West Bank. On Tuesday, September 13, 2005, the Mississippi River upstream of Head of Passes was declared open by the United States Coast Guard. The Head of Passes — 95 miles (153 km) downriver from New