BRIDGE 2A PARNELL AUCKLAND DESIGN 68M OVERALL LENGTH COMPRISING A 48M CENTRAL SPAN AND TWO 10M END SPANS THE LONGEST DOUBLE TRACK CONCRETE RAILWAY SPAN IN NZ -TOTAL WEIGHT OF SUPERSTRUCTURE 2300T CONSTRUCTED ALONGSIDE THE EXISTING RAILWAY LINE AND SLID 15M INTO FINAL POSITION THE HEAVIEST TRANSVERSE SLIDING BRIDGE OPERATION COMPLETED IN NZ. TRANZ RAIL LTD. REQUIRED HOLMES TO CONDUCT A DETAILED DESIGN REVIEW AND ADOPT THE ROLE OF CLIENT REPRESENTATIVE ON SITE, SUBSEQUENT VALUE ENGINEERING, DETAILING AND CONSTRUCTION MONITORING FOR THE CONTRACTOR. RESULT IN CONJUNCTION WITH THE CONTRACTORS, WE IDENTIFIED DESIGN ALTERNATIVES WHICH ALLOWED REDUCED LEVELS OF POST-TENSIONING IN THE MAIN SPAN AND THE INTEGRATION OF ALL THREE SPANS, WITHOUT CHANGING THE NATURE OF THE ORIGINAL DESIGN. IT ALSO MATCHED THE CONTRACTOR’S CONSTRUCTION METHODOLOGY, REDUCED THE DEGREE OF TEMPORARY WORKS AND SIMPLIFIED THE SLIDING PLACEMENT. NEW RAIL BRIDGES RAIL BRIDGE PIER REPLACEMENT CONDITION ASSESSMENT OF RAIL BRIDGES NEW ROAD BRIDGES BRIDGE INSPECTION AND MAINTENANCE ROAD AND RAIL BRIDGE SEISMIC ASSESSMENT AND RETROFIT WHARF STRUCTURES We have always achieved the best outcome through close collaboration with the client, consultant team and contractor beginning at the concept stage. By making sure we understand a client’s risk profile and needs, we can effectively and confidently manage that risk and tailor the design to specific needs. Holmes has worked with many great teams on a wide range of projects.

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