I sold some piles for a job in Willston ND. I-85 bridge over the Missouri River. They started driving them in the fall, 100'ers. I had rail cars going up there in January and I asked the PM if they'll take more since the weather was brutal. He said: "yeah, keep em coming. We only stop driving them if the wind is over 30 MPH or we can't see the top of the crane due to white out conditions"