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The Kronverksky Strait (Russian: Кронверкский пролив) is a narrow channel separating Petrogradsky and Zayachy islands in Saint Petersburg, Russia.〔 〕 It forms an arc approximately long, about wide and deep. To the south is Zayachy Island, which is dominated by the Sts. Peter and Paul Fortress, and to the north is the Kronverk on Petrogradsky Island. It is spanned by the Kronverksky Bridge to the east and the Ioannovsky Bridge to the west. The Ioannovsky Bridge was the first bridge built in Saint Petersburg. It was originally constructed in 1703 as a floating wooden bridge, but was reinforced and rebuilt of sturdier materials over the years.〔 〕〔 (【引用サイトリンク】title=Ioannovsky Bridge, St. Petersburg ) 〕 == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kronverksky Strait」の詳細全文を読む スポンサード リンク
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