As rush-hour traffic built up, the A3036 Wandsworth Road in Vauxhall was closed in both directions between Vauxhall Cross and the Lansdowne Way junction.
People took to Twitter to report gridlocked traffic in the area, with emergency services struggling to get through.
The First Capital Connect train company warned its passengers to expect travel difficulties in the Vauxhall area, although its services were not affected.
Flying conditions this morning were reflected in the fact that London City Airport in Docklands had delays due to poor visibility.
The pilot of the helicopter which crashed had thousands of hours of flying experience including for films such as Die Another Day.
The crane operator only survived the Vauxhall helicopter crash because he was running late and had not reached his cabin.
Air investigators will seek answers to a series of key questions as they begin their inquiry into the London helicopter crash today.