Construction
After several years of deliberations, a decision was made to build the channel at an estimated cost of $37 million. The channel's construction commenced in 1990 and was completed in April 1994. It is about 2.5 kilometres long, 200 metres wide and between 6 and 6.5 metres deep. Construction involved the excavation of about 4.5 million cubic metres of material. In addition to the excavation work, construction of breakwaters, training walls, a bridge and installation of a sand bypassing system was undertaken.
The channel is spanned by the four lane Port Bouvard Bridge which forms part of the Old Coast Road which carries traffic between Perth and the southern coastal townships. Approximately 40,000 vehicles per day use the road. Major residential canal developments have been constructed off the channel including the suburb of Wannanup and a golf course.
Since its opening in 1994 no blue-green algal blooms have occurred.
Read more about this topic: Dawesville Channel
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