So here's the skinny:

I finished the main quest in Mothership Zeta, so of course I make use of Elliot and Sally to get more alien stuff. Every time I revisit the Bridge it would get laggier and laggier, to the point that the game would then crash. It seemed not to matter whether or not I visited often and collected once each time, or if I visited rarely and collected multiple times each time (using the Wait or Sleep function), it just appeared to simply be a matter of time before it [censored] stuff up. It didn't seem to have to much of an effect on the rest of the game, save for a bigger chunk of memory used.

I've done the main quest three times through three different playthroughs, and I'm in the process of a fourth. I've surmised that the following things aren't the issue:

• I've done the quest at level 22 with many of the DLCs and the Main Quest finished and at level 8 with very few quests and no other DLCs completed. This seems to have little effect, so file size wasn't the issue.
  
• I've done this when my PS3 was almost new and 2 1/2 years old. The PS3 isn't the problem.

So, I really can't understand what the problem is. Anyone know how to fix it if it's fixable?