Trixie Belden and the Happy Valley Mystery. "We'd better get out of here in a hurry," Jim said. Trixie nodded, unable to say anything. A rush and a roar of water followed the collapse of the bridge. About fifty or seventy-five feet from them, water swirled angrily. Big tree branches floated by out in the current, then the bloated body of a cow, and half a dozen chickens. "Turn the car around as fast as you can," Honey urged, terrified. "Oh, you can't turn around, Jim! There isn't any road anymore!"
This book is part of the Trixie Belden Books series and is book #9 in the series.