Facts about the Lake Pontchartrain Causeway

Leia Smith | 03 - 31 - 2024

Stretching across the shimmering waters of Lake Pontchartrain, the Causeway stands as a marvel of engineering prowess. But beyond its impressive span lies a treasure trove of captivating facts and untold stories. So, buckle up and embark on a journey as we unveil 15 fascinating facts about Lake Pontchartrain Causeway that will leave you awestruck!

Facts about Lake Pontchartrain Causeway

Facts about the Lake Pontchartrain Causeway

Here are some fascinating facts about this amazing lake. 

The total length of the Lake Pontchartrain Causeway is 24 miles.
  • A. True
  • B. False

1. Longest Continuous Bridge

Holding the Guinness World Record for the longest continuous bridge over water, the Lake Pontchartrain Causeway stretches an astounding 24 miles (38.42 kilometers), connecting Metairie on the south shore to Mandeville on the north shore in Louisiana.

2. Twin Span Wonder

The Lake Pontchartrain Causeway comprises two parallel bridges that boast not one but two spans, doubling the awe and magnificence of this marvel creation. Construction of the first part of the lake  was completed in 1956 and the second part was completed in 1969.

3. Construction Marvel

The Construction of the Lake

Built in the 1950s, the construction was a feat of its time, employing innovative techniques to conquer the challenges posed by the lake’s vast expanse and variable conditions.

4. Pilings to the Depths

The bridges are supported by 9500 concrete pilings that plunge to depths of up to 70 feet, anchoring this colossal structure firmly in place. 

5. Hurricane Resistance 

structural foundations of the  Pontchartrain Causeway


After Hurricane Katrina on August 29, 2005, despite the loss of 17 spans, the structural foundations of the Lake Pontchartrain Causeway remained intact. 

6. Iconic Architecture

Admire the sleek lines and graceful curves of the Causeway’s architectural design, blending seamlessly with the surrounding natural beauty.

7. Scenic Splendor

breathtaking panoramic views of Lake Pontchartrain

As you traverse the Causeway, be mesmerized by the breathtaking panoramic views of Lake Pontchartrain, with its tranquil waters extending as far as the eye can see.

8. Gateway to Adventure

Beyond its functional utility, the Causeway serves as a gateway to a myriad of recreational opportunities, from fishing and boating to birdwatching and picnicking.

9. Economic Lifeline

The Causeway Bridge since its inception, raised tolls in 2017 to fund safety upgrades: $5.00 cash, $3.00 with a toll tag. The annual revenue generated by the bridge is more than $16 million.

10. Environmental Impact

Despite its grandeur, the Causeway remains committed to minimizing its environmental footprint, implementing measures to preserve the delicate ecosystem of Lake Pontchartrain.

11. Wildlife Haven


Explore the rich biodiversity thriving in the waters beneath the Causeway, home to a diverse array of migratory marine species.

12. Cultural Landmark

Imbued with a sense of history and heritage, the Causeway has become an iconic symbol of Louisiana’s cultural identity, cherished by locals and revered by visitors alike.

13. Nighttime Spectacle

Lake Pontchartrain at night

Experience the Causeway’s enchanting transformation as night falls, with the twinkling lights of passing vehicles casting a mesmerizing glow across the darkened waters.

14. Engineering Legacy

The Causeway’s construction serves as a testament to the vision, skill, and unwavering determination of the engineers and laborers. Recognizing its significance, the American Society of Civil Engineers designated the bridge as a National Historic Civil Engineering Landmark in 2013.

15. Enduring Legacy

More than just a bridge, the Lake Pontchartrain Causeway represents a triumph of human innovation and a lasting legacy that continues to inspire awe and admiration to this day.

 In conclusion, the Lake Pontchartrain Causeway is not merely a bridge but a symbol of human ambition and achievement, weaving together the fabric of communities and connecting the past with the present. So, the next time you journey across its expanse, take a moment to marvel at this wonder. 

Read Next