Bridges

Cover of 3D BIM Modelling Challenges for the Bridge over Uarbry Causeway
3D BIM Modelling Challenges for the Bridge over Uarbry Causeway
  • Publication no: ABC2017-040-17
  • Published: 20 April 2017

Roads and Maritime Services (Roads and Maritime) has engaged Opus International Consultants (Opus) to undertake the detailed design and preparation of tender documentation for the bridge over Uarbry Causeway on the Golden Highway (HW27), 64.4km west of Merriwa.

The current Uarbry Causeway is frequently overtopped by 1 in 2 year ARI flood events. The flood events cause disruption to traffic that results in increased travel times and reduced road user safety. The replacement bridge structure is required to raise the level of the road pavement to above the 1 in 100 year ARI flood level. The proposed bridge was configured with three, 13.0m spans of prestressed concrete (PSC) planks, supported on spill through abutments.

Opus decided to use this project as a test on completing Built Information Modelling (BIM) Level 1 3D models and then using the full 3D model in Revit to complete the 2D documentation with the same package.

This paper will provide a summary of our approach on creating an associative methodology and its subsequent challenges that was faced with using the models for the production of Roads and Maritime compliant drawings. We will discuss in detail the advantages and disadvantages of this approach in comparison to the conventional BIM Level 1 methodology of creating the 3D model after the 2D drawings have commenced or completed.

We will then subsequently touch on the advancement and the challenges which we faced in our development of then going towards BIM Level 2 on the project.