Transport for London (TfL) said it had confidence in its inspection regime following a report by the BBC claiming that the Hammersmith Flyover was left open despite being at risk of collapsing.
The report also included a list of flyovers along with their ratings for condition and risk, along with the number of non-cosmetic defects that they had counted.
A spokesperson for TfL said: “TfL has a robust inspection regime for all structures, including flyovers on our road network. This regime is risk based to reflect previous inspection condition factors, the age and type of the structure.
“Importantly, TfL’s structural inspection process is in line with industry guidance for maintaining road assets both nationally and across Europe.”
Six flyovers were listed as being in “poor” condition in the report and one, Westway section 1, was listed as “very poor”. The Westway is currently undergoing overnight work on its expansion joints.
The Hammersmith flyover closed in December 2011 for repairs and was not fully reopened until 28 May.