Major work is underway to upgrade the railway line between Epping and Chatswood to metro rail standards.
A freight train with 30 wagons has been used to deliver construction materials into the underground stations between Epping and Chatswood.
The train dropped off equipment and materials like excavators, pavers, steel and generators and returned to take wagons of rubbish away.
Hi-rail trucks with train wheels dropped off platform screen doors.
Workers have been using excavators and jackhammers to get platforms ready for metro upgrade works, where glass platform screen doors will be installed at all metro platforms.
These safety barriers keep people and objects like prams away from the tracks and allow trains to get in and out of stations much faster.
The upgrade work was unable to be done while the suburban line was operating, due to the scale of the works being done to get it ready for Sydney Metro operations.
High frequency pink Station Link bus services are replacing trains during the upgrade of stations between Epping and Chatswood. Customers can plan their trip at https://transportnsw.info/plan/station-link