-The existing 4 lanes on The Northern Rd will shift onto the newly constructed southbound carriageway, two lanes in each direction will be available for motorists. 
-Tukara Rd between The Northern Rd and Kinmont Rd will also be closed in both directions for 6 weeks. Motorists can detour via Maxwell St and Fragar Rd. 

The following traffic changes have been implemented at Castlereagh Rd and High St, Penrith:        

-Lateral shift to the west on Castlereagh Rd at High St         
-Lateral shift to the south on High St         
-Removal of bus priority lane on High St on eastbound approach to Castlereagh Rd
-The existing “Keep Clear” line marking and traffic signal posts on High St outside the old Ambulance station will be removed.         
-Eastbound on High St will be reduced to a single lane from the intersection of Castlereagh Rd/High St.       
-Lane width reductions on Castlereagh Rd between High St and Jane St.