Tamavua-i-Wai Bridge Fiji
The Tamavua-i-Wai project involved the design and build of a 92m replacement bridge adjacent to the existing structure, with a combination of precast beams and in-situ concrete.
The scope included a combination of precast beams and 6 spans; 21no. ɸ 710 piles driven to a depth of 11.5m to 48m; 360m of embankment and road pavements along with associated service relocations and drainage work involving ground improvement works using wick drains (the first of its kind to be used in Fiji), basal reinforcement, and preloading in a marine environment; and road works – 200m on the Suva side, and 165m towards the Lami side.
A key element of the design was ensuring that current and future environmental and climate risks were considered to safeguard access to basic services and reduce vulnerability to climate-related extreme events and other economic, social, and environmental issues.
Constructing weather resilient infrastructure was vital. During design we considered water levels and associated sea level rise due to climate change, wave heights due to storm-surge arising from cyclones, and tide level deviation. Accounting for these climate impacts on infrastructure investment provides greater value and protection for the Suva community over the long term.