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The National Party has committed to building 10 new major highways at a cost of $10.5 billion if it is returned to power in September.
Prime Minister Bill English announced the policy during a visit to Hawke's Bay today.
The 10 new roading projects announced today are:
• Wellsford to Whangarei
• East West Link in Auckland
• Cambridge to Tirau
• Piarere to the foot of the Kaimai Range
• Tauranga to Katikati
• Napier to Hastings
• Manawatu Gorge
• Levin to Sanson
• Christchurch Northern Motorway
• Christchurch to Ashburton
Mr Bridges said the estimated cost of the new projects was $10.5 billion, compared with $12 billion for the previous seven projects.
They would be funded through the National Land Transport Fund and public-private partnerships.
The initial funding had already been committed to in this year's Budget.
Mr Bridges said the selected projects were New Zealand's highest-volume roads. Once upgraded, they were likely to be continuous four-lane highways.
The seven previous projects were the Puhoi-Wellsford highway, the Western Ring Route in Auckland, the Victoria Park Tunnel, the Waikato Expressway, Tauranga's Eastern Link, Wellington's Northern Corridor, and motorways around Christchurch.