CRASH 3 cars 11:20 pm – Pennant Hills Road Wahroonga at M1 Pacific Motorway 3 of 4 . Northbound lanes closed. Lane 2, Right turn lane. 3 of 4 . Northbound lanes closed. Lane 2, Right turn lane. Both northbound right turn lanes to the M1 Motorway are closed. Diversions:Northbound motorists trying to access the M1 Pacific Mwy can continue on Pennant Hills Rd, then turn right onto Pacific Hwy and left onto the M1 Pacific Mwy on-ramp. Use an alternative route. . Last checked at 1:04am.