We asked the Transport Secretary, Justine Greening, if Londoners could expect further travel problems during the Games.
Transport Secretary Justine Greening MP says that the work done on the M4 in west London over the past week is a "significant repair", but that the road will continue to be monitored.
The Highways Agency has reopened the M4 in west London, after emergency repairs on an elevated section of the motorway.
They thanked drivers for their patience, while they carried out "an exceptionally delicate and difficult operation" to repair cracks in the viaduct.
The M4 has been fully reopened in both directions this morning, after being closed all week for emergency repairs.
However, there are still some weight restrictions between junctions two and three.
Olympics bosses will be heaving a sigh of relief as the motorway is a vital part of the Olympic Route Network, linking London to Heathrow airport.
The Highways Agency has announced that the M4 will not reopen between junctions 2 and 3 on Thursday morning as planned. The organisation says work to repair the Boston Manor Viaduct in West London is more complex than expected.
A spokesperson said they will reopen the motorway as soon as it is safe to do so. For more information on this story click here.