The Longest Bridges in the World

Danyang-Kunshan 164.8 km is the longest. Hong Kong-Zhuhai-Macao 55 km. Lake Pontchartrain 38.6 km.

Chesapeake Bay Bridge-Tunnel 28.3 km. Most ultra-long bridges are in China, built for high-speed rail. The Lake Pontchartrain Causeway is the longest over water.

Bridges over 5 km are engineering marvels requiring years of construction..