The Unofficial
I-26 Construction
Madison County
North Carolina
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Looking east from the west end of Waste Area #1. US 23 is down at the bottom of the hill. The 60" plate pipe and the benching excavation can be easily seen in this photo. The benching is only done where the highway fill is to be placed. Benching increases the surface area between the natural ground and the constructed embankments, reducing the chance of a fill slope failure later in the future.


 
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 John Lansford
25 October 1998