庞恰特雷恩湖堤道(CAUSEWAY)位于美国路易斯安那州，是世界上最长的桥。

1969年，美国路易斯安那州的庞恰特雷恩湖2号堤道竣工，它把曼德韦尔和梅泰里连接起来，全长38.42千米，横跨大湖Lake Pontchartrain，其中有8英里你会只见水不见陆地，桥在湖的正中央纵贯而过。

位于美国路易斯安那州庞恰特雷恩湖上，又称庞恰特雷恩湖堤道，连接新奥尔良和曼德韦尔（Mandeville），全长38.42公里。

庞恰特雷恩湖桥由两座平行桥梁组成，其中1号桥1956年建成通车，2号桥1969年建成通车，2号桥比1号桥约长16米，为38,422米。

大桥原来双向收取通行费1.5美元，1999年5月为缓和交通堵塞，改为单向收取3美元通行费。

2005年8月，在遭到卡特里娜飓风袭击後，大桥虽也受损，但损害几乎全在较老的1号桥，且大桥的基础仍然是完好的。

由于飓风摧毁了I-10高速公路，庞恰特雷恩湖桥成为救援队伍进入纽奥良的主要通道。

庞恰特雷恩湖（Lake Pontchartrain），是美国密西西比河河口湾北岸的一个潟湖，面积1630平方公里，是仅次于大盐湖的美国第二大咸水湖。

全湖属路易斯安那州管辖，南岸为都市新奥尔良。

For decades Lake Pontchartrain Causeway was listed by Guinness World Records as the longest bridge over water in the world. In July 2011 the Jiaozhou Bay Bridge in China was named by Guinness as the 'longest bridge over water'. At that time there was some controversy in the USA as the former holder of the record, the Lake Pontchartrain Causeway, disagreed with Guinness and still called itself the longest.

It made this claim by ruling on the title according to its own definition — that is, how much of a bridge is physically over water, saying that the Jiaozhou Bay Bridge spans water for 25.9 kilometres (16.1 mi) while Lake Pontchartrain Causeway spans 38.422 kilometres (23.939 miles). Shandon Hi-Speed group, the company that built the Jiaozhou Bay Bridge, says its sea crossing length is actually 25.171 kilometres (15.641 miles).

Nevertheless, Guinness World Records stated that the Jiaozhou Bay Bridge is 42.5 kilometres (26.4 mi) long by including other aggregate structures such as land bridges on the ends, and an under-sea tunnel in another part of the city that was part of the same Jiaozhou Bay Connection Project.

In July 2011, Guinness created two categories for bridges over water: continuous and aggregate lengths over water.

 
Lake Pontchartrain Causeway then became the longest bridge over water (continuous), while Jiaozhou Bay Bridge became the longest bridge over water (aggregate).

2013-6-19 and 2013-6-23 实拍.