Franco-British Exhibition and the Central London R

I'd be interested to know if any of the Forum's members could shed light on this. Back in 1906, the executive committee of the Franco-British Exhibition joined forces with the then very new British Olympic Committee to hold a combined exhibition/Olympic Games on the site in Shepherds Bush that eventually became the BBC Television Centre. They had two entrances to the site: one on Wood Lane itself, and the other on Uxbridge Road, which survived - albeit in a reduced form - into this century, until the Westfield development swallowed it up. The Uxbridge Road entrance led to long exhibition halls which were built on stilts over the tracks of the Central London depot in Wood Lane, and then carried on round the perimeter of the depot to form the roof of the station that was built (in an extraordinary short amount of time) to bring people right up to the gates of the exhibition, the Central London's Wood Lane. It seems that the construction of this walkway took place without closing any of the tracks below. I've tried to research as to how this extraordinary feat of engineering came about, but can find no record of it in the Central London archives. Just wondered whether the learned members of the forum had come across any information about this construction, in particular what the Central London gained through having the walkways constructed above it.