Development of a typical pier formwork system. Bridge durability criteria, complicated and dense prefabricated pier reinforcing cages, tight construction programme and detailed Art Deco finishes gave merit to a formwork system that had no form ties through the cast concrete of the piers. Paterdis designed and shop dimensioned the arched pier forms with form ties carefully located outside of the concrete elements. To achieve the required class of finish, the final form solutions were fabricated steel shutters; fabrication that could occur simultaneously with the early stages of site works. The pier forms were designed to cater for out of balance concrete pressures resulting from each arch leg poured at different rates or at different times.

Paterdis and contractor developed a precast concrete pier cap form system hydro-statically sealed to remove the high tide problem and lifted into position from on-site casting beds. The precast elements remained in place and formed part of the final permanent bridge works.

Paterdis provided innovative solutions for the re-use of a temporary access structure during construction works. The temporary access structure was subject to its design loads during a cyclone mid construction period. The access structure fortunately remained undamaged to allow  construction to resume once the cyclone had passed