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<br />SCRIPT-TASKD. REROUTING TRAFFIC <br />(You have 5 minutes to read the script.) <br /> <br />Slide Dl. Task D. Rerouting Traffic <br /> <br />In Task D you decide how to manage the flow of traffic to compensate for washed-out <br />bridges and roads. <br /> <br />Slide D2. Washed-out bridge in Puerto Rico <br /> <br />The loss of bridges and roads severely hampers a community's return to normal <br />functioning after a damaging flood. Here is a bridge washed out in Puerto Rico in 1985. <br />Its loss prevented travel on the major east-west highway in Puerto Rico, forcing long <br />detours. Most flood damaged bridges and roads can be quickly patched up and <br />reopened, but a major bridge or highway can take months, even years, to replace. In <br />the meantime, alternate routes must be found. <br /> <br />Slide D3. Traffic control at a washed-out road <br /> <br />The first task in managing traffic flow is to prevent travel on unsafe roads or bridges. <br />This shows a barricade alerting drivers that the road is impassable. Local officials may <br />need to close low-lying roads and vulnerable bridges when a flood warning has been <br />received. Control of traffic continues during the flood and on into the recovery period. <br /> <br />Slide D4. Map of emergency traffic routes, Salt Lake City <br /> <br />Once the flood has passed, the emphasis shifts to adjusting traffic patterns to the fact of <br />washed out roads and bridges. New routes around the damaged sections need to be <br />selected and designated so that drivers know what to do. This is a map designating <br />emergency traffic routes through Salt Lake City during the 1984 flood. As you will <br />recall, the city used a main street through town as a channel for floodwaters. Traffic <br />was diverted to either side of the flooded street, as shown here. <br /> <br />Slide D5. Detour graded around washed-out road <br /> <br />As we see here, traffic patterns can sometimes be restored temporarily pending <br />permanent repairs. Sometimes detours can be quickly graded around washed out <br />portions of roads. <br /> <br />Script-Task D <br />