Transport for London is to keep the A4 Hammersmith Flyover shut as it conducts further investigations into the “serious structural defect” which forced its immediate closure shortly before Christmas.
In a press release issued on 30 December the transport body said it had been forced to conduct a further week of investigations into the extent of the damage to the concrete structure’s internal cables.
According to TfL the damage to the 900m 1960s was caused by salt water ingress from grit laid during winter which had corroded the cables.
It said it would “explore all options” to reopen the flyover as soon as possible but “must await the outcome of further work” to asses the problems which is expected to be completed this week.
TfL is also working on a longer term solution to strengthen the flyover by introducing extra cables into the structure.
It has pledged to implement the new cables before the London 2012 Games.
TfL managing director of surface transport Leon Daniels said: “Our team continues to work night and day alongside the world’s leading structural engineers to fully understand the extent of the flyover’s structural problems. I have been inside the flyover and seen for myself the unique issues we face.
“Safety must be our top priority and we have not taken the decision to close the flyover lightly.
“However, we are working flat-out to determine what measures we must put in place to safely reopen the flyover as soon as possible. Also, to ensure we can strengthen the structure and extend its life over the longer-term.”