Here's a link to another report.
5 homes set on fire after gas line explodes in West Virginia | Fox News
Looks like I-77, and (route 21, used for emergency vehicles only) are going to be closed for a bit...
If you have to go that way, you may want to consider I-79 to Morgantown or US-35, depending on the direction and type of vehicle you have. I'm not from the area, there may be other routes, too, but these look to be the easiest. What a tough area to have to re-route around...
Be safe...
The statement for the road being closed for 2 days only covered the time needed to assess the damages. With a bridge involved, I would bet they rebuild it. They at least will have to re-pave the highway. This road is going to be difficult for quite some time.