We can and do for many new high-speed rail developments: https://en.m.wikipedia.org/wiki/Ballastless_track https://en.m.wikipedia.org/wiki/Ballastless_track It

We can and do for many new high-speed rail developments: https://en.m.wikipedia.org/wiki/Ballastless_track https://en.m.wikipedia.org/wiki/Ballastless_track It's more expensive to build and fix, but it's also more reliable and needs less maintenance.