Bridge of Khazad-dûm

The Bridge of Khazad-dûm is otherwise known as Durin's Bridge, which implies that it was constructed by Durin the Deathless, the founder of Khazad-dûm. The fact that it was integral to the defences behind the East-gate and the First Hall also tends to support the idea of an early date of construction. Alternatively, it might in principle have been a later addition that was simply given the famous Durin's name, or it might have been the work one of Durin's descendants who also carried the same name; but on balance the Bridge seems more likely to have dated back to the earliest days of Khazad-dûm.

The bridge appears small on this plan, but that is a trick of scale, due to the fact that the halls that it connected were truly immense. The chasm that it crossed is stated to have been fifty feet (about fifteen metres) from side to side. While we are not given such precise values for the halls of Khazad-dûm, it is clear from various references that they would have been measured in miles. For example, the distance from the northern passageway (the one leading down into the Second Hall) and that hall's eastern end was said to be a quarter of a mile, and that was short distance compared with the hall's entire length.