The longest continuous bridge over water, the Lake Pontchartrain Causeway in Louisiana, runs 23.79 miles over open water. The Taman Negara Canopy Walkway in Kuala Lumpur, Malaysia, is the world's longest canopy walkway.

The title for the longest bridge in the world overall belongs to the Danyang–Kunshan Grand Bridge in China, which stretches for 102.4 miles (164.8 km). However, because much of that bridge crosses rice paddies and canals, the Lake Pontchartrain Causeway in Louisiana, USA, is often still cited as the longest bridge continuously over water. The Causeway consists of two parallel bridges measuring 23.87 miles (38.42 km) in length, famously allowing drivers to lose sight of land for several minutes during the crossing. China’s Jiazhou Bay Bridge (Hongdao Bridge) also holds a high ranking, spanning roughly 26 miles, though its "over-water" portion is divided into segments. In 2026, while China dominates the "total length" records with massive viaducts for high-speed rail, the Lake Pontchartrain Causeway remains the Guinness World Record holder for the longest bridge over water in a continuous, unbroken line, serving as a vital and iconic link between New Orleans and its northern suburbs.