div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: 주아카데미과학 2020Truss Bridge Suspension Bridge A simple bridge design uses beams to support the upper roadway An arch bridge uses its semi-circular arch shape to src=https:reader036fdocumentsinreader036viewer202207130260a80aa290e0513f421ededdhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: 주아카데미과학 2020Truss Bridge Suspension Bridge A simple bridge design uses beams to support the upper roadway An arch bridge uses its semi-circular arch shape to src=https:reader036fdocumentsinreader036viewer202207130260a80aa290e0513f421ededdhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv