Topol Missiles on Red Square

From yesterday's Victory Day Parade on Red Square: Topol missiles pass by a military review. These road-mobile ICBM launchers have no American equivalent, and the Topol is about the size of the US Minuteman, which was considered for rail-based deployment in its early development. These are the old Soviet-era Topol (RT-2PM, NATO reporting name: SS-25), not the current Topol-M, which is the most advanced ICBM in the world.
I'm actually a little surprised that the Topols would fit through the entrance to Red Square. I guess that the gap between the Kremlin Wall and the State Historical Museum is bigger than I remember it being.