The Unofficial
I-26 Construction
Madison County
North Carolina


There are two types of rock bolts to be used in these cuts. One type is a simple metal rod inserted into a hole drilled into the rock and grouted in place. These are the other type, which involve drilling a hole in the rock, fitting the metal rod into it, and then putting tension on the rod after it is grounted in place. Metal plates are then fitted over the rod and bolted into the rock, keeping the tension on the rock. The bolts help provide stability to sections of the rock that appear to have fracture planes in them. Photo taken June 1999.



 John Lansford
5 August 1999