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Greenford flyover latest London structure to be closed for urgent repairs

The A40 Greenford flyover has been closed over the entire Christmas and New Year period to allow Transport for London engineers to carry out urgent repairs to its expansion joints.

The flyover was fully closed in both directions from 10pm on Monday 24 December and remained closed until Thursday 3 January.

TfL has had to replace expansion joints across and at both ends of the Greenford Roundabout Flyover and carry out resurfacing around the new joints.

It is the third London flyover to be closed for urgent repairs in a year, after defects were found in Hammersmith flyover last December and in the Highways Agency’s Boston Manor viaduct shortly before last year’s Olympics.

According to a TfL spokesman the work was planned over the Christmas and New Year period to minimise disruption. Traffic was diverted via the roundabout beneath the flyover with a wider diversion route in place for traffic wanting to access the A406 North Circular Road. The A40 was fully reopened in the early hours of 3 January, several hours ahead of TfL’s 5am target.


Readers' comments (1)

  • Q1 After about 50 years use the failure of the expansion joint is not unexpected, but can we not design better joints? Q2 Do the Germans or others do better?
    Q3 Any details of the estimated and measured size of movements and temperatures involved?
    Q4 And how do they relate to any measured tests of specimen unrestricted thermal expansions?
    Q5 Is there yet a straightforward test for thermal expansion in any country?
    I write as a retired materials engineer (MICE) with over 50 years involvement in measuring and testing most concrete properties.

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