Police at the scene shortly after the collision said traffic flow had been heavy in both directions. The boy was struck by a southbound car.
The pedestrian crossing at Otaika was the focus of major improvements in 2010 after local resident Pauline Edwards started a petition following numerous accidents there. The prime minister at the time, John Key, signed the petition.
The upgrade included improved lighting, using a red, textured surface on the pedestrian island to make it more visible, laying a skid-resistant surface on the highway approaches to the crossing to improve braking, and placing the traditional black-and-white pedestrian crossing on a red surface.
Line-marking around the crossing was improved as well.
After Wednesday's incident, local business owners said more needed to be done - and suggested traffic lights or a pedestrian bridge.