The Goulburn-Cooma railway line was prescribed as the eastern territorial boundary, Oaks Estate was excised from Queanbeyan by federal Act and a 20 metre long railway bridge.
The Goulburn-Cooma railway line formed the eastern territorial boundary for the Seat of Government. Thus, by the stroke of the pen and an Act of parliament, Oaks Estate was excised from Queanbeyan by a 20 metre long railway bridge.