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<br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />Road Raises <br />. 24 feet wide pavement section <br />. 3: 1 sideslopes <br />. Maximum 5% longitudinal slope <br /> <br />. Widening of HWY 6 Bridge <br />. Width of each bridge is 38 feet <br />. Older timber bridge would be replaced <br />. 20' x 8' RCBs would be added to the southbound bridge as lID alternative to widening the <br />bridge <br /> <br />. Road/Driveway Depressions <br />. 24' wide non-paved road section <br />. Maximum grade 5 % <br />. low flow culverts <br />. Surface hardening along channel bottom <br /> <br />. Land Acquisition for Levees <br />. Assume 5 feet beyond the toe of the levee (both sides) to detcrmine required right-of-way. <br />. Assume fee simple property acquisition for land under levees/channels <br />. Assume flow easement for land between levees if land can still be farmed <br /> <br />Using the conceptual design, an estimate of construction quantities was prepared for the proposed <br />improvements. These quantities were tabulated and assigned a unit cost, lIDd a construction cost was <br />determined. Unit costs were derived from values published by FEMA (G.2 Numeric Cost Code <br />Listing for Region 8). Where needed, the published rates were supplemented and altered to reflect <br />local conditions with additional unit prices derived from actua1 bid tabulations for similar work as <br />published by the Urban Drainage and Flood Control District. Primary unit costs for each item are <br />presented in the following table. <br /> <br />III-26 <br />