London Bridge
This part of the final stanza, line 427, brings us back to the reference to London Bridge in I. Burial of the Dead. However, while this line describes the destruction of the bridge, playfully alluding to the childhood rhyme and song. Line 61, an allusion back to Dante’s Inferno, reads, “A crowd flowed over London Bridge, so many, I had not thought death had undone so many.” Considering that this second line about the London Bridge comes chronologically later, Eliot creates a history of the Bridge, which relates to his pessimistic view of human nature and future. While once, the London Bridge was a symbol of human growth and innovation, now, it has fallen, either due to parts of WW1 or our own self-destruction. In the larger context of TWL, this line seems to tie it down to a negative ending, or at least incompleteness of the story, since London Bridge falls, along with the Fisher King’s “arid plain” that he still attempts to fish in.
Separately, I also find it interesting that the Fisher King relates back to Buddhism and Hinduism, kind of tying the ends as well. Eliot, having studied both religions, understands the Fish allusions as multicultural, which leave it open to interpretation by the reader depending on their own knowledge.