Less than a block away from the site of most of the work in the 1914 image, a little over a hundred years later, a team of workers appears to be installing a power pole above ground. This seemed like a regressive move to me.
So I asked a friend who is a retired BC Hydro engineer about this apparent oddity. He explained that AC power downtown is still underground (although he mentioned that there are a few exceptions downtown where AC is transmitted above ground), but DC power (used exclusively to power trolley buses and earlier streetcars) is transmitted above ground. Trolley buses need to run on direct current; alternating current would make for a very jerky ride.