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<br />I <br />~."."". <br /> <br />Flo..A.... <br /> <br />. Ground elevation 451 feet <br /> <br />. 1969 flood lowered bed approximately 1.8 m (6 feet) and <br />damaged 1 column <br /> <br />~~. Piers <br /> <br />. <br /> <br />406 mm (16-inch) cast in place columns, 6 columns <br />approximately 2,3 m (7,5 feet) on centers rnade up each pier <br /> <br />. <br /> <br />Columns were embedded 12.5 rn (41 feet) (elevation 410 <br />feet) <br /> <br />. <br /> <br />Columns were reinforced 5.2 m (17 feet) below the original <br />ground surface (to elevation 434 feet) <br /> <br />. <br /> <br />As a result of bed lowerin9 during 1969 flood, web wc,lls 2.44 <br />m (8 feet) high were constructed at each pier to reinforce the <br />columns (elevation unknown but web walls extended some <br />distance into the bed) <br /> <br />32?" <br /> <br />. --------i <br />-------.-.--- !f <br />....-------- <br />_._._/ 1".1,..;".. <br />__"__~ Flo..Ac~o <br /> <br />'" <br />T <br /> <br />AVERAGE DEPTH 8.G' <br /> <br />fROSS SEi:TION OF RIVER UPST~L/;l!! <br /> <br />F=-I <br /> <br />1;>2" <br />" i-:::19 <br />c_ il~ <br />, _'",m.' ! "'--- <br />l :~,;:;';:' :: "'---I <br /> <br />-===-- -~~~~~~~ <br /> <br />". <br /> <br />1-5 BRIDGES - UPSTREAM CROSS SECTION AND <br />BRIDGE CROSS SECTION <br /> <br />4,7 <br />