Lake Pontchartrain Causeway
30.164708333333 - 90.128830555556Koordinaten: 30 ° 9 ' 52.9 "N, 90 ° 7' 43.8 " W
F1
Road
The Lake Pontchartrain Causeway ( Lake Pontchartrain Causeway, named after real - dam ) north of New Orleans, Louisiana, United States, with a length of 38.422 km (other indication: 38.318 km ) the tenth longest bridge in the world and the second longest bridge above water. The highway bridge crosses the Lake Pontchartrain and connects Metairie, a suburb of New Orleans, with Mandeville. It starts on the southern shore at Jefferson Parish and ends on the north shore at St. Tammany Parish.
The bridge is an elevated girder bridge of prestressed precast concrete elements with span lengths of 17 meters to a total of 9,000 concrete pillars. It consists of two individual, 24 meters apart parallel structures, one of which was a 1956, completed the other in 1969. Since both directions are separate one-way traffic. On the older bridge the traffic going south, on the newer north. Each direction has two lanes. There are seven crossing points at which you can switch in an emergency from one side to the other bridge.
At one point ( at mile 16) the bridge vessel traffic as a bascule bridge can be opened.
From 29 August to 14 October 2005, the bridge - damaged by Hurricane Katrina - closed to public traffic. Before Katrina, she was working day and happened of 30,000 at peak times of up to 3,500 vehicles per hour. In 1956 there were only 3,000 vehicles a day. From 1956 to 1995, a crossing cost consistently $ 1 toll, then $ 1.50, Today only $ 3 collected during fights on the north shore for the trip to the south.