it's in the bottom, right corer of the desert
walk across it
you cross bridge of eldin
Somewhere
It is somewhere in level 4
most people say he is Seventeen making Zelda umm probley somewhere around that age.
Use the dominion rod (acquired in the temple of time) to move a nearby owl statue. move it somewhere you can use to jump across the gap.
The bridge is located in the Gerudo Desert. After you arrive in the desert for the first time scan your surroundings and look for a tall stone somewhere north-northeast of your position. Approach that, fight the Re-Deads that spawn, and climb up. Examine the bridge. Midna will pop out of your shadow and muse about it, and after she does select 'Warp' from her menu and choose the location where the bridge SHOULD be.
To Eladin Bridge!
at the bridge workers home
you need four monkeys to get across the bridge in Zelda twilight princess.
use the hookshot near the bridge
to the bridge of eldin