Bryce, Kim G posted this pic from her trip last week. I think she parked near the trail head, but you can see the road conditions. With current weather at Whitney Portal showing lows and highs between 30 and 50, the road should be dry some places but icy in others. Understand that you will be driving past the "Road Closed" sign, and proceeding at your own risk, so be sure to check weather forecasts carefully before you go.
Kim G hiked off the Main Trail up the North Fork Lone Pine Creek (no trail). Pics from her trip are here: Whitney via MR
