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The Project is Phase I of the Complete 540 project (aka Southern Extension) which will ultimately provide the final segments of the 540 Outer Loop around the greater Raleigh area. It extends the Triangle Expressway from its southern terminus by 17.1 miles of new six-lane toll road. It will include several interchanges with intersecting roads, 55 bridges, 25 box culverts, and 2 stream crossings.