4.10pm: NZTA says traffic is still congested from the city to Penrose. Alternative route SH20 (South Western Motorway) is flowing well at present.4pm: The Penrose bridge has been deemed safe for all vehicles. An NZTA spokeswoman said there are signs ahead of the bridge, warning motorists with overheight vehicles to pull over.
3.50pm: The current travel time between Hobson St in the city and Manukau is an hour and 12 minutes. The normal time is 15 minutes, according to Auckland Transport.