[5] The junction is important for road transport as it lies on the only direct route to Heathrow Airport from the City and the West End.
It was built as a temporary measure in 1971, using the Bridgway format devised and offered to highway authorities by Marples Ridgeway Ltd.[6] The flyover was quickly put together with a cheap steel frame and was designed to last no more than a few years.
On 29 October 2013, after stormy winds the previous day, Transport for London inspectors discovered defects and closed the flyover, declaring it unsafe.
Traffic flow was therefore reduced, with peak time queues back to the Hammersmith flyover to the east and similarly to the west.
[8] Following on from this closure a major refurbishment, incorporating a new deck, surface and parapets, allowed the flyover to reopen and confirmed its permanent status.