For those with a fear of heights, please hold onto your medicine while viewing. We present 20 of the world’s most dangerous bridge tops that will make your hands and feet tremble.

Lake Pontchartrain Causeway (USA)

The Lake Pontchartrain Causeway in Louisiana, USA, is a toll road spanning Lake Pontchartrain for a total length of 38.42 km (about 24 miles). The length of this bridge is almost equivalent to a full marathon, which gives you an idea of its incredible distance. The toll is $3 and is only collected when traveling from the north side, Mandeville. Previously, it was collected from both sides at $1.50, but this was changed to ease congestion.

Regarding the scenery, many find it not very appealing while driving, with some saying it was “boring.” It was once the longest continuous bridge in the world, and was even registered in the Guinness Book of World Records, but bridges of greater length have since opened, and the record has been updated.