Thursday, May 26, 2011

arch bridge

An arch bridge is made out of stone, brick or concrete.
One of the famous arch bridges is the Sydney harbour bridge.
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1 comment:

  1. Mrs NatuschMay 26, 2011 at 10:24 AM

    To Trinity
    You have found out some interesting facts about arch bridges.
    Do you know how an arch bridges holds the weight of cars and trucks?
    Mrs N :)

    ReplyDelete

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