Hello Paul,
If you Google "Ordnance Survey", and go to the OS search page, type in Kilmichael Glassary. The map that appears should show a village about 3 miles north of Lochgilphead, and just east of the A816 Oban road. Between this road and the village, is the hamlet of Bridgend.
If you then go onto the "Old-Maps.co.uk" site and type in Kilmichael Glassary, three much older maps will be visible c1870 under the main map that is shown. These old maps show Bridgend as a much smaller grouping of houses. This may be the Bridgend that you are looking for.
In addition to the above if you visit the "Geograph" site, and again type in Kilmichael Glassary, you should gain access to 3 photographs of Bridgend as it is at present.
Hope this helps you in your quest.
Istrice