Transmission Gully budget blowout swells again

Wellington's billion dollar road project Transmission Gully has blown its budget again, but who will pay the extra is unclear.
The 27 kilometre stretch of highway was supposed to cost $850 million but that bill has already grown by nearly $200 million more.
Now that Covid-19 has pushed the completion date into next year, more money is needed to cover off delay penalties.
Reporter Charlotte Cook has the story.