The Bridge of Khazad-dûm, also known as Durin's Bridge, was a narrow stone bridge crossing a chasm in the underground Dwarf-city of Khazad-dûm close to its eastern gates.
Description
The Bridge of Khazad-dûm , also known as Durin's Bridge , was a narrow stone bridge crossing a chasm in the underground Dwarf-city of Khazad-dûm close to its eastern gates .
On 15 January T.A. 3019, Gandalf and the rest of the Fellowship of the Ring fled over the bridge from the Balrog, a large number of Orcs and two Trolls. Gandalf remained behind in the middle of the bridge to hold it against the Balrog. After a fight with the Balrog, Gandalf resorted to destroying the part of the bridge on which the Balrog stood with his staff. The Balrog fell into the chasm, but caught Gandalf with his whip and pulled him down with him.
It is possible that the Dwarves reclaimed Moria in the Fourth Age and rebuilt the bridge.