Big excitement here in a small town — the bridge to the 9th street Island is collapsing. It’s not a surprise — the surprise is that it hasn’t fallen down before now. The river has been high since just after Mother’s Day, and it really went up these last few days of warm weather. It was Thursday afternoon that the sag became noticeable, and they evacuated some folks, then closed the bridge entirely. Yesterday they took off anyone who wanted to go in a helicopter, and the DOT has arrived with a Bailey Bridge they’re planning to put in, but…