- Posts: 59
- Joined: Wed Oct 22, 2014 8:53 pm
I think 'at-grade' means grade of Callaghan Square - not grade of bay line track.
But I dont think jacking an underpass through the embankment is feasible as there is not enough clearance and too much risk of settlement. So I predict that Bay line will have to close for a very fast and intensive operation - excavate section - install precast box sections - reinstate - could be done within two weeks with proper planning and preparation.
(Speaking as a Construction Manager who has executed similar fast track shutdowns before). Just keep Network Rail as far away as possible.