Art
J-GLOBAL ID:201602021294155273
Reference number:58A0075765
Bridge piers tall as 15-story building but only 7.1/2 ft. wide at the base for two creek crossings.
Putah&Pope橋の架橋工事.Califolnia(高さ45mの橋脚を片持式架設した,スパン22.5mのプレートガーダー橋)
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