The project design had to take into account the applicable standards, obvious physical limitations and technical issues, but also to address a developing set of stakeholder constraints and preferences, construction requirements and statutory obligations.

In order to produce the new design, CEA used survey data of the existing highway and connecting roads, drainage and services to create models of the upgrade. Design software modelled the road geometry and intersection design, as well as simulated traffic signal performance.

In addition to the road design, the Great Eastern Highway upgrade comprises the following components:

• Drainage
• Street lighting
• Pavement marking
• Signage
• Retaining walls
• Fencing
• Safety barriers
• Service relocation
• Intelligent Transport System (ITS)
• Public Artwork
• Landscaping
• Urban Design

All of these design components are developed in accordance with Main Roads’ and Australian standards. The Alliance also provides to Main Roads all of the drawings, reports and documentation necessary to maintain the upgrade.