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 Highways Agency closed the motorway last Friday night because in entering the final stages of the repair work, a new crack was found in a highly stressed part of the bridge supports. This required a unique repair solution involving the manufacturing bespoke specialist steel plates and their installation over the crack.
– The Highways Agency
The crack then had to be removed to prevent further damage to the structure. This intricate part of the operation took several hours – even though the crack was a hairline one.
The crack was discovered during an ongoing repair programme. Work on that continues and for this reason vehicles weighing 7.5 tonnes or more will still be restricted from using the motorway between the junctions. A diversion route remains in place via the A4 and A312 dual carriageways.
Drivers are thanked for their patience during this complex work.
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.