"In total, 50 piles will be driven to depths of between 42 and 50 metres - 36 piles for one bridge and 14 for the second. It is anticipated that the first stage of the piling will continue through until the end of the year, and the second stage completed in 2013," Mr Gliddon said.
Operation will take place between 7.30am and 6pm Monday to Saturday and nearby residents could experience noise disturbance.
A piling rig was moved to Domain Road late last week where it was previously used at the southern end of the project for the piling on the rail bridge at Maketu.
Piling at the Kaituna River Bridge continues on the eastern (Maketu) side of the river, with piling on the western (Papamoa East) side now completed.