Captain Cook Bridge Strengthening

Freyssinet Australia was engaged by TMR to complete specialist post-tensioning works on the Captain Cook Bridge in Brisbane City. The Captain Cook Bridge is a critical infrastructure asset that connects the M1 Pacific Motorway to Brisbane’s Riverside Expressway and InnerCity Bypass. The 4 halving joints on the bridge required strengthening to extend the service life of the bridge and allow for the increased traffic loading since its construction. The structure consists of 2 separate Northbound and Southbound bridges. Each bridge consisted of a box girder with 3 webs. TMR / RoadTek completed coring and web thickening works on all webs, both sides of each halving joint. A total of 608 Freyssibars were installed, stressed, and grouted across all locations. Each web required vertical, transverse, and longitudinal bars as part of the design. Works were completed from temporary works platforms suspended from the structure, scaffold built off the Goodwill Footbridge that runs under one of the joints, and from the road deck under traffic control. The majority of Freyssinet works were completed during the night shift due to road closures for many of the activities.