AS part of BHP Billiton Iron Ore's planned production increase to 300MT of iron ore, the Turner River Rail Bridge project is a dual-track, 225m (738ft)-long bridge, running alongside the existing, 117m (384ft)-long single-track bridge built 38 years ago. A contract for bridge designer Sinclair Knight Merz (SKM) and contractor John Holland Pty Ltd included dismantling the old bridge and restoring the river to its original width. The project is located on the BHP Billiton Iron Ore Port Hedland to Newman railroad, 112 km (70 miles) south of Port Hedland. The new bridge superstructure consists of 15 pairs of 15m (49 ft)-long, pre-stressed concrete, trough girders, each weighing 95t, supported on fabricated steel headstocks, and tubular steel piles socketed into granite bedrock. The tubular piles are raked at 1:4 and 1:5, and vertical, the combination depending on the pier location. The total number of piles is 58 in two abutments and 14 piers.
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机译：作为必和必拓铁矿石计划将铁矿石产量提高到300吨的一部分，特纳河铁路桥项目是一条双线长225m（738英尺）的桥，与现有的长117m（384英尺）的单轨一起运行这座桥建于38年前。桥梁设计师Sinclair Knight Merz（SKM）和承包商John Holland Pty Ltd的合同包括拆除旧桥并将河水恢复到原来的宽度。该项目位于BHP Billiton铁矿石黑德兰港至纽曼铁路上，位于黑德兰港以南112公里（70英里）。新的桥梁上部结构包括15对长15m（49英尺）长的预应力混凝土，槽形梁，每对重达95t，支撑在预制的钢制主轴箱上，以及插在花岗岩基岩中的管状钢桩。管状桩的倾斜度为1：4和1：5，并且垂直，组合取决于码头位置。两个基台和14个墩的桩总数为58。
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