Authorities say a crash on Interstate 84 near Portland, Oregon, in whiteout conditions caused a more than 100-vehicle pileup.

With up to a foot of fresh snow on the way, it is shaping up to be a busy holiday weekend in Colorado’s high country.

The curse? The already terrible traffic along the I-70 corridor during holiday weekends will likely be worsened with the adverse weather conditions. Presidents Day weekend historically is ...