This is the "narrow" bridge to cross the Colorado River going from California to Arizona side. This bridge was installed by the farmers in the area. Years ago the county or state bridge was condemned and they wouldn't install another bridge. So the farmers installed their own. But they put up a sign that said "cross at your own risk" for liability purposes. Oh that makes me feel so SAFE. But it was there two years ago and still there -- so it must be okay.