Rogers Stirk Harbour + Partners is backing ambitious plans to replace the congested A4 dual carriageway in west London with a new road tunnel
The proposal – drawn up by Hugh Broughton Architects and nine other resident practices – has already won the support of Hammersmith and Fulham Borough Council leader Nick Botterill and local MP Andy Slaughter.
London mayor Boris Johnson is also understood to have shown an interest in the 3.7 kilometre scheme which goes under the banner West London Link Design.
Key elements include replacing the 622 metre-long Hammersmith flyover which controversially carved up the area fifty years ago.
Mike Davies of RSHP – which has operated out of offices nearby since 1983 – said removing the ‘space-gobbling, light-blocking, community-dividing flyover’ would make Hammersmith ‘more humane and liveable.’
He said: ‘I am strongly in favour of an east–west tunnel under Hammersmith roundabout, the quality of life of the whole area would be immeasurably improved by the construction.’
The 622 metre-long elevated flyover opened in 1961 as part of a later abandoned project to create a series of motorways through the inner capital.
Water ingress However saw the structure temporarily closed in December 2011 amid fears it could collapse and a repair programme has commenced to extend its life by 15 years.
The West London Link Design proposes demolishing the A4 flyover and street-level elements between Chiswick and Earls Court to create a new linear park.
The proposal cites examples of similar schemes which have been used to regenerate districts in New York, Boston and Madrid.
The reduction in surface-level space used for the A4 would allow residential, community and commercial developments to line the park – the backers claim.
Other suggestions include replacing Hammersmith bus station with a new interchange on Buttwerwick Street, pedestrianizing King Street the town’s main shopping parade and creating a new River Thames pier.
The other architects behind the project are Biscoe Stanton, Hans Haenlein, Paul Murphy, Barroll Webber, Assael, Powell Tuck, Chartered Practice and Simone de Gale.