Is it safe to ride with bent fork?
besides the structural issues, looks like this crash has changed your bike geometry rake, head angle, tail, and wheel base.  This will likely result in much more sensitivity to handlebar input.  

If you can, I would advise against riding the bike, particularly on low traction surface since a small jerk can put it a handle-bar lock and you into an endo.  

As others noted, the clearance from the down-tube is also cause for caution.  The steel fork can likely be bent back, provided that there are no frame fractures and wheel damage (hard to imagine the wheel being perfect with forks bent).

otherwise, it doesn't seem likely that the steel bike would disintegrate as you're riding.

good luck