this is my first visit to your page and im enjoying it alot,thank you for it,but you have 11 pines bridge in placer county,its actually in eldorado county,the coun ty line follows the middle fork of the american river up past foresthill,(born and raised in auburn cal) but the location is deffinantly in eldorado not placer.thanks Dave
Actually in this area the Rubicon River is the border between the counties https://en.wikipedia.org/wiki/Rubicon_River_(California) until it flows into the Middle Fork American River above Afterbay 1030-004 Dam, downstream from which the Middle Fork becomes the county border.