In October 2007 the RTA awarded Baulderstone, Hyder Consulting and Manidis Roberts the Alliance contract to design and construct the Inner West Busway at Rozelle. Austress Freyssinet was engaged under a sub-alliance agreement. The project is currently under construction and is due for completion in 2011.

The Inner West Busway project objective was to provide a bus lane, a tidal flow arrangement and a new duplicated Iron Cove Bridge. The New Iron Cove Bridge consists of eight incrementally launched box girder spans, with three approach spans of Super-tee girders, providing a total combined bridge length of 480m.

The bridge structure and associated temporary works had several significant constraints including the location of services (sewer, disused sluice tunnel) within the casting bed area, heritage items, constrained horizontal alignment and a reduced area for a casting bed due to the proximity to the existing road.

Innovative design and construction solutions overcame technical and geometric challenges, which included the following:

1) The casting bed is located in front of the abutment, rather than behind.

2) Pier 1 is incorporated in the casting bed.

3) The launching pier is an elevated structure, which required bracing back to the casting bed to reduce the horizontal loads and movements.

4) The box girder is being launched over permanent pot bearings.

5) The horizontal alignment changes on Pier 2 with a tighter radius while the centreline radius of the box girder remains constant, which impacts the cantilever lengths of the box girder, and necessitates transverse post-tensioning.