Reinforced Soil wall and approach embankment for Cliff Street Overpass constructed on stabilised foundations

Menard - Stone Columns
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The township of Portland was established in 1834 and since then it has become one of the major sea- ports in Australia. The Port of Portland is a deep- water bulk port strategically located between the capital city ports of Melbourne and Adelaide. It has facilities capable of handling the berthing of all types of bulk and general cargo vessels. The port is well served by a road and rail network. Typical daily truck movements to and from the port are forecast to grow by 225% by 2030 (VicRoads Report 2004). The Cliff Street overpass project consists of a 3-span bridge with prestressed concrete beams as the super- structure. The main span is approximately 35m long with two end spans each approximately 20m long. The Project was approved in 2005 with an estimated cost of $15 million. The construction of the Cliff Street Overpass project was awarded to Akron Con- struction Pty Ltd.

This Paper presents the findings of the geotechni- cal investigations at this site. It also provides de- tailed discussion on the design, construction, and testing of piles, ground improvement and a rein- forced soil structure.

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