During an icy, cold winter, construction is pretty limited. But in the Mountain West, construction jobs are seeing an early boost thanks to an unusually mild winter. “You can't lay asphalt in temperatures that are below, I think, 45 degrees — like, it doesn't work,” said Jodie Green, who’s in Flathead Valley, Montana, with Schellinger Construction. When their road contracts started this spring, full work crews hit the ground paving.