Exclusive new footage of record-breaking Cross River Rail site

Crews at our Albert Street site recently marked a huge milestone for the project, having fully excavated the 50-metre-deep station box.

The station box is now the deepest hole ever excavated in Brisbane – almost double the previous record of 26 metres set during Queen’s Wharf’s construction.

The engineering behind excavating such a deep hole in the middle of a bustling CBD is astounding – about 47,000 cubic metres of spoil was removed (equivalent to about 19 Olympic swimming pools), while 340 rock anchors, over 1,500 bolts and 4,500 cubic metres of shotcrete was used.

Given the significant depth, 19 massive steel propping beams – each weighing about 50 tonnes – were used to ensure the excavation was stable.

But words and numbers alone don’t really do this massive feat of engineering justice.

We thought it might be better to send a drone down into the hole and share with you some never-before-seen footage of the Albert Street station box.