The NZ Transport Agency retained the Well-Connected Alliance to design and construct a 4.8-kilometer section of a 48-kilometer ring road around Auckland, New Zealand. The Waterview Connection is the largest and most complex road project ever undertaken in New Zealand. Tunnel size and rock density presented extreme challenges for alliance partners NZ Transport Agency, Fletcher Construction Co., McConnell Dowell, Parsons Brinckerhoff, Beca, Tonkin & Taylor, and Obayashi Corporation.
The project’s tunnels are among the top 10 in the world for size and complexity. These factors, and the density of the rock had to be taken into account with the road design. Using MXROAD and MicroStation for road design, tunnel modeling, and configuration of the structure enabled the design to be fully tested before moving into the construction phase. ProjectWise was deployed as the collaboration platform to enable information mobility.
The 3D modeling capabilities of MXROAD and MicroStation significantly reduced design time. Using ProjectWise saved about NZD 500,000 in man-hours and reduced document control time to an absolute minimum. These upfront savings then translated into major cost savings during the construction and delivery phase of the project. As the final link in the 48-kilometer ring road, the Waterview Connection will reduce travel time and congestion, while improving network reliability and resilience.
The 12 road alignments were fully modeled in MXROAD, including the pavements layers. Using MXROAD, the designers could quickly model options for the client to consider, saving the Alliance time and money. MicroStation was used to model structures, the interchange ramps, and a 300-meter footbridge. ProjectWise helped connect the many teams in the joint venture who were all able to access engineering documentation when and as they needed it. Each revision of the model was verified and checked in a structured fashion using the auditing tools and workflows within ProjectWise.