Northland rescue helicopter ambassador Alice Rule has launched an online petition (www.change.org) calling for a reduction in the 100km/h speed limit over the three bridges on SH1 at at Kawakawa.
Ms Rule, who co-owns a dairy farm at Pakaraka, said two people had died and three were critically injured on the bridges within the last three months.
Last month a motorcyclist became Northland's first road fatality of 2019 in a collision with a truck on the middle bridge, and two years ago Ms Rule had had a close call herself.
An oncoming car that was overtaking other traffic pulled back into the correct lane just in time.
At last report her petition had more than 400 signatures, and she was aiming for 1000.