Laserfiche WebLink
condition. This is caused by the use of a culvert which extends beyond the width of the existing bridge <br /> and delays the expansion of the flow downstream of the culvert. Under the 100-year flood, the low <br /> section of the gravel road between County Highway JG and the bridge would be inundated by 1.6 feet <br /> and 1.8 feet under the existing and proposed conditions, respectively. Most of the flood water would <br /> flow downstream from this low section.Therefore, it is recommended that residents do not utilize this <br /> bridge under flooding conditions. <br /> The key parameters of the culvert which were determined by the HEC-RAS program are summarized <br /> below: <br /> Culvert material: corrugated aluminum <br /> Culvert size: 7.5-foot diameter, 26-foot long, circular <br /> Number of barrels: 1 <br /> Invert elevations: El. 938.94 feet (inlet), El. 938.36 feet(outlet) <br /> Embedment: 6 inches <br /> If you have any questions regarding this report, please feel free to contact me at <br /> Yiying.xiong@ysjinternational.com or 608.408.7070. <br /> .4601,14 „Air:0 _ <br /> Yiying Xiong, P.E., D. WRE, PMP <br /> President <br /> YSJ International Consulting, LLC <br />