Repair to the mountain on highway 20.

Sometimes the mountain required repair as well as the road. During the winter, snow and ice works its way into the crevices. It expands them, breaking off pieces of rock and weakening the rockface making it hazardous. In the spring, road crews would drill into the rock face (as in this picture), plant a charge of dynamite, and blow away the dangerous parts.

Of course, this means more waiting ... but at least you get to see an explosion.

Disposal was easy. Just push it over the edge. I would judge the road here to be a single lane, and the slope is about as bad as it gets. I have never seen it more than vertical.

Sometimes cars go over the

edge.