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Based on the final quantities, the construction cost for the 100th Street & 54th Avenue Intersection Improvements was $4,879,637.58. This cost represented an increase of $131,247.73 (2.76%) from the contract amount of $4,748,389.85 including Change Order No. 1. This increase in cost is due to the Iowa DOT required project incentives for smoothness and thickness,along with other minor quantity overruns.