The towers feature a double decker skybridge connecting the two towers on the 41st and 42nd floors,
which is the highest 2-story bridge in the world. It is not attached to the main structure, but is
instead designed to slide in and out of the towers to prevent it from breaking, as the towers sway
several feet in towards and away from each other during high winds. It also provides some structural
support to the towers in these occasions. The bridge is 170 m (558 ft) above the ground and 58.4 m (192 ft)
long, weighing 750 tons. The same floor is also known as the podium, since visitors going to higher levels
have to change elevators here. The skybridge is open to all visitors, but tickets are limited to about 1000
people per day, and must be obtained on a first-come, first-served basis. Initially, the visit was free but
in 2010, the tickets started being sold by Petronas. Visitors can choose to opt for package one which is just
a visit to the skybridge or go for package two to go to the skybridge and all the way to level 86. Visitors
are only allowed on the 41st floor as the 42nd floor can only be used by the tenants of the building.
The skybridge also acts as a safety device, so that in the event of a fire or other emergency in one tower,
tenants can evacuate by crossing the skybridge to the other tower.[40] The total evacuation triggered by a bomb
hoax on 12 September 2001 (the day after the September 11 attacks destroyed the twin towers of the World Trade
Center in New York City) showed that the bridge would not be useful if both towers need to be emptied simultaneously,
as the capacity of the staircases was insufficient for such an event.[41] Plans thus call for the lifts to be
used if both towers need to be evacuated, and a successful drill following the revised plan was conducted in 2005.
There is a two hinged arch that supports the skybridge with arch legs, each 51 metres (167 ft) long, that are
bolted to level 29 of each of the towers.[30] After being constructed on the ground, the skybridge was lifted
into place on the towers over a period of three days[31] in July 1995.[30] Instead of being directly connected
to the towers, the skybridge can shift or slide in and out of them to counterbalance any effect from the wind.
Residing on the 41st and 42nd floors, the skybridge connects a conference room, an executive dining room and a prayer room
For more information please visit: Petronas Twin Tower