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<br />CHANNEL IMPROVEMENTS AND BRIDGE RE~LACEMENT MAIN STREET BRIDGE <br /> <br />Item Cost Ouantitv Yllll Unit Cost Plus 30' I2.tAl <br />Excavation with back- <br />hoe and truck 33,000 c.y, $ 2.73 $27,027 $ll7,ll7 <br />Concrete retaining <br />wall downstream <br />from bridge 27 c.y, 236.85 1,918 8,313 <br />Fine grading 200 c,y. .22 13 57 <br />Riprap 100 ton 35.75 1,073 4,648 <br />Bedding 50 ton 23.56 353 1,531 <br />Topsoil 10,000 c.y. 2.58 7,740 33,540 <br />Erosion control 15,000 s.y, 1.08 4,860 21,060 <br />Clearing and grubbing 10 acre 2,500.00 7,500 32,500 <br />Seeding 10 acre 680.00 2,040 8,840 <br />Replace Main Street <br />bridge 2,560 s .f. 32.00 24,576 106,496 <br /> " <br /> Subtotal " $334,l03 <br /> " <br /> Engineering and design at 15' 50,ll5 <br /> Supervision and administration at 10' 33,410 <br /> Total $4l7,628 <br /> <br />Unit costs to improve channel are based on project estimate along Yood <br />River and Yarm Slough near Grand Island. <br /> <br />The bridge replacement cost was taken from Means Building Construction <br />Cost Data - 1991, 49th Annual Edition. <br /> <br />.' <br /> <br />" <br /> <br />~ <br /> <br />, <br /> <br />- <br /> <br />C-1 <br />