Associated work includes pavement widening, earthworks, service relocations, traffic signs and markings.
The works come after several serious crashes in the area in recent years, including the death of 18-year-old Calum Gilmour in October 2015.
Road fatalities on Western Bay roads in 2016
- April 16: Cyclist Shinia Matehaere, 5, killed after a collision with a ute on Matapihi Rd.
- May 7: Tauranga man Dion Pollero, 29, killed after collision with a truck on the Kaimai Range.
- May 21: Te Hira Whittaker-Ngaropo, 12, and his brother Chance, 16, killed on SH2 in Pikowai.
- July 11: Suzanne Langlois, 45, killed on SH2 east of Katikati after a collision with another car.
- July 29: Leigh Rhodes, 60, and friend Kenny McRae were killed when they were struck by vehicle while changing a tyre between Baypark and Maungatapu.
- August 2: Sitiveni Vaipulu, 44, Koli Vaipulu, 21, Halani Fine, 28, Samuela Taukatelata, 28, and Sione Teulaka, 21, died after their car collided with a logging truck near Dawson Rd.
- August 27: Bay elder Paula Heke was killed when her car was in a collision with another on Te Puna Rd.
- October 7: Shayne Peter Waaka, 40, was killed in two-car collision on the Lower Kaimai Range.
- October 13: Martin John Ferry, 30, was killed after his truck-and-trailer unit collided with a logging truck on the intersection of SH2 and Pongakawa Station Rd.
- November 23: American tourist Carol Ann MacMillan, 71, was killed when a truck hit her while she was cycling.