Traffic on Warringah Road will move onto upgraded eastbound lanes from Forest Way to east of Wakehurst Parkway. Changes during the work will include:
- From 4pm Saturday to 8am Sunday, traffic lights at the Forest Way and Wakehurst Parkway intersections will be switched off and Warringah Road will be reduced to one lane in each direction.
- By 8am Sunday, eastbound traffic will be using the new lanes.
- From 9pm Saturday to 5am Monday, Hilmer Street will be left-in and left-out only at Warringah Road. Access from Warringah Road eastbound will be via Allambie Road, Rodborough Road and Warringah Road (westbound). 
- From 4pm Sunday to 5am Monday, traffic lights will be switched off at Hilmer Street while the intersection is rearranged.

Changed traffic arrangements that will apply from 8am Sunday onwards: 
- The right turn from Wakehurst Parkway northbound to Warringah Road eastbound will be temporarily removed (will return at a later date as construction progresses). Motorists can turn right at Frenchs Forest Road. 
- The left turn slip lane from Wakehurst Parkway southbound to Warringah Road eastbound will be permanently removed. Motorists can turn left at the traffic lights, from the kerbside lane.
- The shared use path on the northern side of Warringah Road will be open between Forest Way and Wakehurst Parkway.