One is through Cheongungyo and Baegungyo Bridge in the east leading to Daeungjeon Hall, and the other is through Yeonhwagyo and Chilbogyo Bridge in the west that is a bridge connected to Anyangmun Gate leading to Geungnakjeon Hall (the temple of abode land).
Bulguksa Temple's Cheongungyo and Baegungyo Bridge is connected Jahamun Gate leading to the Daeungjeon Hall, standing for connecting the world for the common people under the bridge and the one for Buddha over it.It is made of 33 steps, representing 33 heavens in Buddhism.
The 33 steps mean not yet reaching the phase of Buddha, so the staircase also can be said to be 'bridge of hope', or 'bridge of pleasure and blessing'.
There are 17 steps of Cheongungyo Bridge at the lower part, and 16 steps of Baegungyo Bridge at the upper part.
It is sometimes compared to life, the former standing for the green youth and the latter the white-haired elders.The structure is unique in bridge-shaped staircase, and the climbing slope is elaborately trimmed in 45 degrees.
And since the under part of the bridge is rainbow-shaped arch, it make smooth and vital the view that is hardend by the rectilinear lines.
It is said that there was a pond under the reinforcing stonewall where the bridge is.
Even now, we can see a device for to make water fall down on the left of the staircase.
It is said that when water was falling from here, a rainbow was made due to the spray of a waterfall.
From this, we can imagine that the Bulguksa Temple was very beautiful once upon a time.This bridge seems to have been built in the 10th year (750) of King Gyeongdeok in the Unified Silla Dynasty.
It is a very precious relic because it is the only bridge that remains with a perfect form among the bridges in Silla Era.
Furthermore, the rainbow-shaped arch of the under part is also an important matter in that it shows the beginning time of arch in stone bridges or place gates.