A flood has taken a bridge, and two people walk to the place where it used to be. That is all the plot "Floodtide" offers, and in only six lines Louise Louis turns it into a small study of how a relationship holds together, or fails to, when one person speaks and the other will not. I know nothing reliable about the poet's life or the occasion of the poem, so everything here rests on what the words themselves do.
The opening line sets the scene with an ellipsis: "We went to where the bridge had been . . ." The pluperfect "had been" matters. The bridge is already a memory, and the walkers are visiting an absence. The trailing dots make the sentence hang unfinished, the way a hesitant walker might pause at an edge. From the start, the poem is about what is missing and what that absence asks of the people standing in it.
Then comes the strangest image: "as birds still tethered by a thread." Birds suggest freedom, flight, the ability to leave. But these birds are "tethered," held back by something as slight as a thread. The picture catches the couple's situation neatly: they could separate, and yet something fragile keeps them linked. The word "still" is quietly ambiguous. It could mean they remain tied despite everything, or that the tie has become motionless, stilled. A thread is also the kind of thing that snaps, so the tension is built into the image.
The fourth line is the most compressed, and probably the most puzzling: "spanning desolation's arc / dividing stress by what we said." There is a nice paradox in "spanning." To span is to bridge, so the walkers themselves seem to be taking over the fallen bridge's job, arching across a gap. But what they span is "desolation," a bleak and emptied landscape, perhaps an emotional one as much as a flooded one. Then "dividing stress by what we said" borrows the language of arithmetic, as if words could be a divisor that shares out strain between two people. The phrase is hard to pin down, and that seems deliberate. Talk is treated as a kind of calculation, an attempt to make the pressure bearable by spreading it around, and the reader is left unsure whether the sum works.
The final couplet delivers the poem's central idea: "One silent . . . while the other talked; / self-moving bridges as we walked." The ellipsis returns, this time placed after "silent," so the very punctuation enacts a silence. The two figures are no longer merely crossing a gap; they become the bridges. Each is "self-moving," a connection that carries itself, which is a slightly eerie and even comic image, a bridge that strolls. Yet the poem gives these living bridges unequal roles. One speaks, one says nothing, and the connection between them is lopsided. The reader has to decide whether silence is a failure to span the distance or its own form of crossing.
Structurally, the poem is tidy. Six short lines, steady tetrameter-like beats, and a rhyme scheme that runs ABABCC: "been" and "said," oh, not quite, since "been" and "arc" do not rhyme, but "thread" and "said" do, and "talked" and "walked" lock together in the closing pair. Notice how loosely the early rhymes behave, with "been" and "arc" left unmatched, so the first four lines feel unsettled. Then the couplet snaps shut with a clean, almost conversational rhyme, as though the poem finally finds its footing on the very image of two people walking.
Because it is so brief, the poem leaves a great deal unsaid, and that is its quiet achievement. It never tells us why the bridge fell, who the two walkers are, or whether they will reconcile. It offers a flooded landscape, a handful of images, and a final picture of two people moving side by side, one speaking, one silent, each trying to be the connection the world has lost.