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<br />Guide For Approximate Zone A Areas <br /> <br />Developing BFEs <br /> <br />REFERENCE <br /> <br />1. U.S. Department of Transportation, Federal Highway <br />Administration, Hvdraulics of Bridqe Waterwavs, Washington, <br />D.C., March 1978. <br /> <br />2. <br /> <br />U.S. Department of Transportation, <br />Administration, Hvdraulic Desiqn of <br />Washington, D.C., September 1985. <br /> <br />Federal <br />Hiqhwav <br /> <br />Highway <br />Culverts, <br /> <br />V-34 <br />