Plans to reopen the M4 in west London have been delayed, as highways bosses admitted that repair work was taking longer than expected.
The stretch between junctions two and three could now remain closed into the weekend, while work continues on a crack discovered in an elevated section of the road.
On Monday, the motorway is due to become part of the Olympic Route Network, with one lane on each carriageway reserved for competitors, officials and sponsors. It is expected to be one of the busiest routes during the Games because it connects London to Heathrow Airport.
Drivers are advised to continue using alternative routes via the M3 or M40.
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