The National Party is defending its role in the Transmission Gully, following a scathing review that found the project was flawed from the get go.
An interim review into the 27km highway has found serious flaws at the planning stage of the public-private partnership project, or PPP, along with a lack of transparency.
Transmission Gully was the first motorway in New Zealand set for a public-private partnership model set up under the National government in 2012.
Labour says they are now having to clean up the mess.
Our political reporter Charlie Dreaver filed this report.