I was recently in Wien, Praha (and many other cities in Mitteleuropa). I
encountered tram track reconstruction at junctions in both cities. Here are
photos.

In Wien, most tracks seem laid in a concrete base, but with removable
concrete slabs set to street level. You can see that in photo 314, which is
of the Route 33 terminus at Augasse. I took this photo on a Sunday, but the
trams kept running despite the works, though an adjacent stop
(Strassenbahn Haltestelle, I love that name) was moved to a temporary
location.

Photo 525 shows similar work on a junction in Praha, but trams were
diverted around the section. It was interesting seeing a team of men
digging out the old tracks by hand and shovel, not with a machine. Further
along the road, the usual machinery and cranes were in use renewing the
traction poles and overhead wires. I believe my photo is of works in
Smetanovo Nabr at the junction with Narodni, by the Vitava River.

These photos are taken with what my Danish friend Signe called my "boomer
camera" which means they are much better resolution than photos on my phone
camera. It is very hard to load more than one or two boomer-camera photos
here (I had to laboriously reduce their size). I therefore plan to put an
album of my boomer-camera pix on the Trams Down Under & Overseas Facebook
group later.

https://www.facebook.com/groups/tramsdownunderoverseas

David McL, NZ.