No way I would try to cross tracks like that.
If they are not at 90 degrees, I would not try it at any speed.
Also, in many places they re-pave the road and do one lane at a time, with a 1 to 3 inch sharp difference between the new and old, madness to try and change lanes in that situation.
90 degrees or not doing it.
Heal up well, pain is one thing, not being able to ride is worse...
But you can ride with a cast/boot thing, I did when I broke my ankle...
Was kind of nice being off work and being able to ride!