Dunno what the brick pier is for - part of a former bridge?

Barwon River bridge
Dunno what the brick pier is for - part of a former bridge?
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Taken with a Canon EOS 350D DIGITAL
Date: June 19, 2008 15:31 PM
Exposure Time: 1/100 sec
Aperture Value: f/5.6
Focal Length: 22 mm