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<br />condition reviewed and/or analyzed for this study are provided in Tables 1 through 4 (attached). These <br />comparisons show that the proposed project will not increase base flood elevations through the study <br />reach. However, the fmal flood hazard mapping will show an increase in base flood elevations <br />downstream of Harmony Road due to the addition of a cross section, at the corrected effective step, to <br />better define flooding conditions in that area. <br /> <br />MT-2 Form3-LPATH <br /> <br />Section C.3 - Bridge/Culvert: Design Plans <br /> <br />The design drawings for the bridge do not include beveling or rounding details as these are not applicable <br />to the structure. It is noted that the bridge will operate in a non-pressurized condition during the 100-year <br />event. The proposed structure is perpendicular to the river; consequently, a skew angle is not applicable, <br /> <br />Section C.4 - Bridge/Culvert: Sediment Transport Considerations <br /> <br />River geomorphology was considered in the design of the bridge structure; however, detail sediment <br />transport analyses were not conducted. River geomorphology was considered based on previous <br />geomorphic, sediment transport and channel stability analyses conducted by Anderson Consulting <br />Engineers for the reach of the Poudre River from Harmony Road upstream nearly to Prospect Road <br />[2001]. Our previous geomorphologic work on the Poudre River, combined with a review of current river <br />conditions through the study reach, all point to the conclusion that the existing channel configuration <br />upstream and downstream of Harmony Road is relatively stable with respect to sediment transport <br />conditions (i.e., bed level changes). Based on this conclusion, the proposed channel configuration <br />through the proposed bridge closely matches the existing channel configuration both upstream and <br />downstream of the bridge. Grading of the left and right overbanks through the bridge also closely <br />matches the left and right overbank elevations upstream and downstream of the bridge. This is intended <br />to promote the continued stability of the reach by not altering the current sediment transport <br />characteristics of the river. Local channel stability through the bridge is addressed by the proposed scour <br />countermeasures described in the enclosed report. <br /> <br />Harmony Road Bridge Replacement and Roadway Improvements _ CLOMR Application <br />MT-2 Forms Additional Information <br /> <br />Page 2 of6 <br />