Sounds like that would put the problem about where the Cassiar Hwy crosses over the Dease River. The last time we were through there, 2009, I could see where a good section of the road had been replaced with new construction. The river had eroded most of the road away. From about 50 miles north of Dease Lake, the road is close to several rivers, creeks and lakes, running along side some, crossing others, etc. Part of the fun adventures of the north. Real pain, if a traveler gets up to the closed area and has to back track to get to the Alaska Hwy. That would throw in an extra day or two of driving. Hopefully they have the problem signed back at the Kitwanga junction.