Days before the anniversary of the terrorist attack the news broke that a home could not be found for the sculpture because it had been refused by bureaucrats and London councils.
Mr Johnson, who is also chairman of the London Legacy Development Corporation, described the situation as “ridiculous" and has asked his team to find a home for it at the Olympic Park.
The piece, entitled After 9/11, is made from a Ground Zero girder and was gifted from the US as a public reminder of the 2001 atrocity which killed 2,977 people, including 67 Britons.
It was on display in Briton for 28 days after it was unveiled by Mr Johnson in 2011, but has since been left to go to waste in a Cambridgeshire farmyard after a number of officials across London barred the permanent display.
Mr Johnson said today: “We backed the 9/11 project when the sculpture first came to Battersea but finding a permanent home for it has proved incredibly difficult, whether it be opposition from Boroughs or bureaucrats.
“Clearly this can’t continue. As a result I've asked my team to find a permanent home for the sculpture on the Olympic Park. The Park was home to a Games based on tolerance, harmony and respect, and will soon be home to a massive multi-dimensional and vibrant community - the perfect riposte to those who sought to divide the world on 9/11."
It was originally gifted on the understanding it remain on permanent display, and one campaigner described the two year delay in finding it a home a “national embarrassment”, adding: “It's also an insult to New York and all those who died.”
A New York judge had to sign off a special agreement releasing the metal, which could still be used as court evidence in any case relating to the September 11 al-Qaeda attack.
London was the only capital to be gifted a piece of the steel recovered from the site.
Since it was taken down from its temporary home in Battersea Park every council in London has either refused to house the 28ft high sculpture, the Sun reported, or ignored requests to discuss a site.
Lord West, the former First Sea Lord who is closely involved with the 9/11 London Project which organised the sculpture, said: “It is a disgrace.
“It is really very sad because the main thrust is that this is an educational charity. This was meant as an iconic piece of art which is a focus for our youngsters so that they do not forget 9/11. The current situation is outrageous.”
He welcomed Mr Johnson’s offer, although added that personally he would prefer to see the piece in the city as it was mostly city workers who were killed in the attack.
The artwork by American artist Miya Ando was originally due to be housed in Potters Fields Park next to City Hall, but the management trust that leases the land is said to have voted against a permanent display.
Since then other attempts to house it in London have failed, with sources claiming that lack of suitable sites, local objections, and calls for a memorial which include victims in other conflicts have been cited as justification for refusal.
It was being stored underneath a blue tarpaulin at a farm in Cambridgeshire, but has now been moved to a storage depot in Ruislip, north west London.
Victim’s families, including Patricia Bingley, 78, whose son Kevin, 43, died in the attack, joined calls for it to be given a prominent home as a reminder of the events for generations to come.
The campaign was backed by the former Archbishop of Canterbury George Carey, who insisted it should be an “ever-present reminder of the evils of intolerance and bad religion”, and historian Simon Schama.
