But *why* is there not a rope bridge over the Charles? Now that you've invented it, it seems to me that the obvious MIT hack (similar but very not similar to the time there was a thing on/under the field at the Harvard Yale game)*
would be to put a rope bridge next to the Weeks foot bridge. The timing should be right before the Head of the Charles, in which MIT and Harvard (and Yale) compete. Engineers should be able to figure this out, right?

* https://www.espn.com/college-football/story/_/id/25276347/best-college-football-prank-harvard-yale-mit-balloon