 On 3 October 1936, a road bridge was opened across the entrance to the Pauatahanui Inlet connecting Paremata to Dolly Varden, known as Mana from 1960, eliminating a 22-kilometre journey around Pauatahanui Inlet to Plimmerton.The bridge became part of SH1 when centennial highway developments saw the completion of a highway from Pukerua Bay to Paekakariki.A second bridge was built in 2004 allowing two lanes of traffic in each direction.