ChrisOTS,
If you are climbing on a bridge that was new in 2009, I don't care what material it is made of, you are a fool. Please change it out NOW!!! I really don't want to read about any kind of accident that you may have involving the bridge on your saddle. Rope bridges should be replaced at least yearly and more often under the extreme condiitions you mention that you work in. Bridges are cheap and easy to replace, funerals are not!
If you are climbing on a bridge that was new in 2009, I don't care what material it is made of, you are a fool. Please change it out NOW!!! I really don't want to read about any kind of accident that you may have involving the bridge on your saddle. Rope bridges should be replaced at least yearly and more often under the extreme condiitions you mention that you work in. Bridges are cheap and easy to replace, funerals are not!