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<br />Lesson 1 <br /> <br />Introduction - Participant Workbook <br /> <br />D. <br /> <br />Culvert Uses <br /> <br />CULVERTS <br /> <br />. HIGH FREQUENCY OF INSTALLATION, ON <br />AVERAGE EVERY 1/4 MILE ON RURAL <br />HIGHWAYS <br />. THEREFORE, APPROXIMATELY 12.5 <br />MILLION CULVERTS IN USE ON RURAL <br />HIGHWAYS <br /> <br />1.12 Culvert Applications <br /> <br />A culvert is used primarily in a roadway system to move water flow (runoff) <br />from one side of the roadway to the other. <br /> <br />. Culverts are used on the average of approximately once every 1/4 mile <br />on typical rural highway projects in the United States. <br /> <br />. Since there are 3.1 million miles of rural highways, there are <br />approximately 12.5 million culverts in the United States. <br /> <br />Culverts can have multiple uses as well, including walkways, bikeways, <br />wildlife migration, etc. <br /> <br />NOTES: <br /> <br />1.6 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />