The full, true name of the bridge spanning the gap is Petra’s Sun-Fixated Span of Glorious Marvels.
It is known that The Clearvor (Desert Giants) built the Southgate Span bridge over the Chasmlands at Southgate Garrison. It is said they merged themselves with the spanning portal to the south – a last faithful act to ensure its legacy is accessible. It is their strength that keeps the span from collapsing – it should not be able to keep its own weight without support.