When riding the Hong Kong Tramways, I was quite surprised to see how they maintain their trackwork – by digging up the tracks while trams are still running over the top!
As each worksite road vehicles had to be diverted onto other routes.
But trams were free to keep on rolling through the work site.
The maintenance workers arrived by road.
Cutting up the concrete that surrounded the tracks.
New rails were put into place, but only bolted in place.
Welding having to wait until night time, when the trams stop running.
With the concrete pour the final step.